He who is endowed with faith and zeal and has disciplined his senses obtains Knowledge. Having obtained Knowledge, he soon attains supreme Peace. (Bhagavad Gita, 4.39)
Unless one becomes childlike in faith, it is difficult for one to realize God. If the mother says to the child, ‘He is your brother,’ the child fully believes that the person referred to is really his brother. If the mother says, ‘Don’t go there, there is a bogy,’ the child is indeed convinced that there is a bogy. God is moved to pity when He sees in a man that kind of childlike faith. None can attain God with the calculating nature of the worldly-minded. (Sayings of Sri Ramakrishna, 158)
Does one get faith by mere study of books? Too much reading creates confusion. The Master (Sri Ramakrishna Paramahamsa) used to say that one should learn from the scriptures that God alone is real and the world is illusory. (Holy Mother Sri Sarada Devi)
All such ideas as we can do this or cannot do that are superstitions. We can do everything. The Vedanta teaches men to have faith in themselves first. As certain religions of the world say that a man who does not believe in a Personal God outside of himself is an atheist, so the Vedanta says, a man who does not believe in himself is an atheist. Not believing in the glory of our own soul is what the Vedanta calls atheism. (The Complete Works of Swami Vivekananda, 2.294)
If you are always worried about hypothetical obstacles, your work will suffer and you will gain nothing. Have this faith: ‘I have taken refuge in God. All my obstacles will go away. How can there be any danger for me?’ (Swami Turiyananda)
You will have to pray and pray very earnestly. … There is nothing He will withhold from you. He will give you faith, renunciation, purity, discrimination, dispassion and all. Whatever He has He will give you. He embodied Himself as man because He wanted to give you all these virtues. … My child, be resigned to Him. Everything will come in time. — Mahapurush Swami Shivananda