Emerson Said It
"Ne te quaesiveris extra" This quote is practically saying that you shouldn't care what others think and just do you
"Trust thyself: every heart vibrates to that iron string." you should trust yourself because you're a strong person
"The virtue in most request is conformity. Self-reliance is its aversion. It loves not realities and creators, but names and customs" You want to be the same as everyone else, you wanna have what everyone else has.
 "But these impulses may be from below, not from above." You may think that your impulses are good but in reality they're actually bad. So as a Christian would say, its work of the devil.
"A man is relieved and gay when he has put his heart into his work and done his best; but what he has said or done otherwise, shall give him no peace" Being proud of the work you have done an not being ashamed of it because you worked hard on it.