What is “the right spirit”?
It depends on the case, my child. The right spirit is the will to perfect oneself, or the will to be calm, or… it depends, you see, depends on the circumstances. …it means that in each circumstance there is a spirit which is the suitable spirit, the one you ought to have, the attitude you must inwardly take. It depends on the case.
For example, you see, as soon as one feels a wave of physical disequilibrium, of ill health coming, well, to concentrate in the right spirit is to concentrate in an inner calm, a trust in the divine Grace, and a will to remain in physical equilibrium and good health. This is the right spirit. In another case, one may feel a wave of anger or a fit of temper coming from outside; then one should withdraw into an inner calm, a detachment from superficial things, with a will to express only what comes from above and always be submissive to the divine Will. This is the right spirit. And in each case it is something like that. Naturally it always comes back to the same thing, that one must remember the Divine and put oneself at His service and will what He wills.
But in one case you may want the calm, in the other you may want the force, in another still you may want health, in yet another something which resists the pressure from outside.
When one is perplexed, when one has to make a choice, when one doesn’t know what the right thing to do is—you see, one has to choose among two or three or four possible decisions and doesn’t know which is the right one, then one must put oneself as far as possible in contact with one’s psychic being and the divine Presence in one, present the problem to this psychic consciousness and ask for the true light, the true decision, the one most in accordance with the divine Will, and try to listen and receive the inspiration.
In each case, you see, it is the right attitude.
[CWM2, 6:340-41]
Sweet Mother, here Sri Aurobindo says, “… the difficulty faced in the right spirit and conquered, one finds that an obstacle has disappeared.” What is the right spirit?
…right spirit means not to lose courage, not to lose one’s faith, not to be impatient, not to be depressed; to remain very quiet and peaceful with as much aspiration as one can have, and not worry about what is happening. To have the certitude that this will pass and all will be well. This indeed is the best thing.
[CWM2, 7:9-10]

What is Right attitude?

Is it really the best that always happens?… It is clear that all that has happened had to happen: it could not be otherwise— by the universal determinism it had to happen. But we can say so only after it has happened, not before. For the problem of the very best that can happen is an individual problem, whether the individual be a nation or a single human being; and all depends upon the personal attitude. If, in the presence of circumstances that are about to take place, you can take the highest attitude possible—that is, if you put your consciousness in contact with the highest consciousness within reach, you can be absolutely sure that in that case it is the best that can happen to you. But as soon as you fall from this consciousness into a lower state, then it is evidently not the best that can happen, for the simple reason that you are not in your very best consciousness. I even go so far as to affirm that in the zone of immediate influence of each one, the right attitude not only has the power to turn every circumstance to advantage but can change the very circumstance itself. For instance, when a man comes to kill you, if you remain in the ordinary consciousness and get frightened out of your wits, he will most probably succeed in doing what he came for; if you rise a little higher and though full of fear call for the divine help, he may just miss you, doing you a slight injury; if, however, you have the right attitude and the full consciousness of the divine presence everywhere around you, he will not be able to lift even a finger against you.
I have had innumerable examples of the power of right attitude. I have seen crowds saved from catastrophes by one single person keeping the right attitude. But it must be an attitude that does not remain somewhere very high and leaves the body to its usual reactions. If you remain high up like that, saying, “Let God’s will be done”, you may get killed all the same. For your body may be quite undivine, shivering with fear: the thing is to hold the true consciousness in the body itself and not have the least fear and be full of the divine peace. Then indeed there is no danger.
[CWM2, 3:154-55]

Inner State made up of faith and Trust

All men of action, discoverers, inventors, creators of knowledge proceed by faith and, until the proof is made or the thing done, they go on in spite of disappointment, failure, disproof, denial because of something in them that tells them that this is the truth, the thing that must be followed and done. Ramakrishna even went so far as to say, when asked whether blind faith was not wrong, that blind faith was the only kind to have, for faith is either blind or it is not faith but something else—reasoned inference, proved conviction or ascertained knowledge.
Faith is the soul’s witness to something not yet manifested, achieved or realised, but  yet the Knower within us, even in the absence of all indications, feels to be true or supremely worth following or achieving. This thing within us can last even when there is no fixed belief in the mind, even when the vital struggles and revolts and refuses.
[SABCL, 23:572-73]

Inner State made up of Peace and Equanimity

Most of you live on the surface of your being, exposed to the touch of external influences. You live almost projected, as it were, outside your own body, and when you meet some unpleasant being similarly projected you get upset. The whole trouble arises out of your not being accustomed to stepping back. You must always step back into yourself—learn to go deep within —step back and you will be safe. Do not lend yourself to the superficial forces which move in the outside world. Even if you are in a hurry to do something, step back for a while and you will discover to your surprise how much sooner and with what greater success your work can be done. If someone is angry with you, do not be caught in his vibrations but simply step back and his anger, finding no support or response, will vanish. Always keep your peace, resist all temptation to lose it.
[CWM2, 3:160]
Quietude is a very positive state; there is a positive peace which is not the opposite of conflict—an active peace, contagious, powerful, which controls and calms, which puts everything in order, organises. It is of this I am speaking; when I tell someone, “Be calm”, I don’t mean to say “Go and sleep, be inert and passive, and don’t do anything”, far from it!… True quietude is a very great force, a very great strength. In fact one can say, looking at the problem from the other side, that all those who are really strong, powerful, are always very calm. It is only the weak who are agitated; as soon as one becomes truly strong, one is peaceful, calm, quiet, and one has the power of endurance to face the adverse waves which come rushing from outside in the hope of disturbing one. This true quietude is always a sign of force. Calmness belongs to the strong.
[CWM2, 8:329]

Inner state made up of Cheerfulness and Perseverance

Generally speaking, man is an animal who takes himself terribly seriously. To know how to smile at oneself in all circumstances, to smile at one’s sorrows and disillusions, ambitions and sufferings, indignation and revolt—what a powerful weapon with which to overcome oneself!
[CWM2, 14:330]
Surely it is not necessary to be always laughing; but liveliness, serenity, good humour are never out of place. And how helpful they are! With them the mother makes the home happy for her children; the nurse hastens the recovery of her patient; the master lightens the task of his servants; the workman inspires the goodwill of his comrades; the traveller helps his companions on their hard journey; the citizen fosters hope in the hearts of his countrymen.
[CWM2, 2:192]
Inner state made of Gratefulness and Humility
People are not aware of the workings of Grace except when there has been some danger, that is, when there has been the beginning of an accident or the accident has taken place and they have escaped it. Then they become aware. But never are they aware that if, for instance,  journey or anything whatever, passes without any accident, it is an infinitely higher Grace. That is, the harmony is established in such a way that nothing can happen. But that seems to them quite natural. When people are ill and get well quickly, they are full of gratitude; but never do they think of being grateful when they are well; and yet that is a much greater miracle!
[CWM2, 5:406]
To be humble means for the mind, the vital and the body never to forget that without the Divine they know nothing, are nothing and can do nothing; without the Divine they are nothing but ignorance, chaos and impotence. The Divine alone is Truth, Life, Power, Love, Felicity.
[CWM2, 14:152]