“Because when I was young and I'd get an A on a history test.. or whatever.. I'd get this good feeling about all the things that I could be. And then I never became any of them.”
Related quotes

“I didn't get where I am today by worryin' about how I'd feel tomorrow.”
They Call Me Tater Salad

As soon as you stop wanting something you get it. I've found that to be absolutely axiomatic.
Source: 1975, The Philosophy of Andy Warhol (1975), Ch. 1: Puberty

Quoted http://books.google.com/books?id=m-gqAQAAIAAJ&q=%22I'd+hate+to+be+a+teetotaller+Imagine+getting+up+in+the+morning+and+knowing+that's+as+good+as+you-re+going+to+feel+all+day%22&pg=PA276#v=onepage by Leslie Halliwell in Halliwell's Who's Who in the Movies (1984)

As quoted in Esquire (January 2010), p. 89
Source: The Charioteer (1953), p. 285
Context: You mustn't get so upset about what you feel, Spud. No one's a hundred per cent consistent all the time. We might like to be. We can plan our lives along certain lines. But you know, there's no future in screwing down all the pressure valves and smashing in the gauge. You can do it for a bit and then something goes. Sometimes it gets so that the only thing is just to say, 'That's what I'd like to feel twenty-four hours a day; but, the hell with it, this is how I feel now.

As quoted in The Crosswinds of Freedom, 1932-1988, p. 636, by James MacGregor Burns (2012)