You

Whatever you think, that you will be. If you think yourselves weak, weak you will be; if you think yourselves strong, strong you will be; if you think yourselves impure, impure you will be; if you think yourselves pure, pure you will be. This teaches us not to think ourselves as weak, but as strong, omnipotent, omniscient. No matter that I have not expressed it yet, it is in me. All knowledge is in me, all power, all purity, and all freedom. Why cannot I express this knowledge? Because I do not believe in it. Let me believe in it, and it must and will come out.

Swami Vivekananda