The complete happiness which people look forward to as the objective of their life on earth can never be attained. For it is mostly based on things and persons, on what is outside the seeker, and on what is perishing. The happiness which they can truly attain is not of this kind, although it may include and does not exclude this kind. It is mostly based on thoughts and feelings, on what is inside the seeker, and on what is abiding.
The disciple's serenity must remain unbroken whether he succeeds in any enterprise or not, and whether he is able to do so soon or late. For it must not depend on these outward things; it must depend on inward realization of truth. He should do all that is humanly possible to succeed. But, this done, he should follow the Gita counsel and leave the results in the hands of God or fate. Thus, whatever the results may be, whether they are favourable or not, he can then accept them and keep his peace of mind.
Even if he is doubtful about a favourable result, he must resign himself to the situation as being truly the Overself's will for him just now. By this acceptance, the sting is removed, and patient resignation to the divine will is practised. He will then have no feeling of frustration but will retain his inner peace unshattered. He should remember, too, that he is not alone. He is under divine protection, for if he is a true disciple he has surrendered himself to his higher self. Therefore let him cast out all worry in connection with the matter, placing it in higher hands and leaving the issues to It. Let him refuse to accept the depression and anxiety. They belong to the ego which he has given up. They have no place in the quest's life of faith, trust, and obedience. Let him resort to prayer to express this humble resignation and trust in superior guidance, this belief in the Overself's manipulation of the results of this matter for what will be really the best in the end.
Fate provides him with difficulties from which it is often not possible to escape. But what must be borne may be borne in either of two ways. He may adjust his thinking so that the lessons of the experience are well learnt. Or he may drop it, for he need not carry the burden of anxiety, and remember the story of the man in the railway carriage who kept his trunk on his shoulders instead of putting it down and letting the train carry it. So let him put his "trunk" of trouble down and let the Overself carry it.
-- Notebooks Category 24: The Peace within You > Chapter 3: Practise Detachment > # 264