Start at the beginning: Read Some Emerson - Spiritual Laws, Part 1

We like only such actions as have already long had the praise of men, and do not perceive that any thing man can do may be divinely done. We think greatness entailed or organized in some places or duties, in certain offices or occasions, and do not see that Paganini can extract rapture from a catgut, and Eulenstein from a jews-harp, and a nimble-fingered lad out of shreds of paper with his scissors, and Landseer out of swine, and the hero out of the pitiful habitation and company in which he was hidden. What we call obscure condition or vulgar society is that condition and society whose poetry is not yet written, but which you shall presently make as enviable and renowned as any. In our estimates, let us take a lesson from kings. The parts of hospitality, the connection of families, the impressiveness of death, and a thousand other things, royalty makes its own estimate of, and a royal mind will. To make habitually a new estimate, - that is elevation.
What a man does, that he has. What has he to do with hope or fear? In himself is his might. Let him regard no good as solid, but that which is in his nature, and which must grow out of him as long as he exists. The goods of fortune may come and go like summer leaves; let him scatter them on every wind as the momentary signs of his infinite productiveness.