I know that feeling all too well. People don't realize it, but not being able to express yourself is one of the most frustrating experiences anyone can go through. Having something funny or smart to say but not having the ability to say it is horrible, and constantly having that issue can make it seem like you're living in an endless nightmare. You didn't ask to be given this curse, so don't even think about feeling stupid. A deaf person shouldn't feel stupid because he can't hear, a paraplegic person shouldn't feel stupid because he can't walk, and a stutterer shouldn't feel stupid because he has issues talking. Don't form a lesser image of yourself over something you have so little control over. I met a guy in one of my physics labs who had a problem with stuttering, but he didn't let it affect him or change his character. He was always the guy who would take the initiative within our group, and would help out every single one of us if we were struggling with something. He would stutter every single time he had to say a long physics word like "light intensity" or "elctromagnetic force", but literally not a single one of us brought it up, because not a single one of us cared. The guy was smart, funny, and kind. We didn't give two fucks he had trouble getting his words out. We all loved the guy, and his stutter didn't change that. Don't let your stutter change who you are. I guarantee it, there's a million things to love about yourself. Don't let one negative thing cloud your judgement of who you are. You're not stupid because of your stutter, and you're most certainly not hopeless because of it either. Things are going to get better. Start looking for all the positive qualities you have, and work on improving those even more. I wish you the best of luck. :)