Successful stutterers, how did you do it?

Successful stutterers, how did you do it? Hello, im 19, a stutterer, that has almost always known the right answer, wanted to correct someone, but just doesn't do it because of the chance of stuttering. I fear and have anxiety of school presentations and reading out loud, to the point i just say i haven't done my work and take the negative mark, while i have the work all done sitting on my desk, this makes me worry about my future, how will i perform in situations in life that i need to step up in, in order to move forward, or will i just work with my hands, and not my brain, because i fear to put my thoughts and ideas into words. I'd like to ask all of you, where do you work? And was stuttering a handicap for you?