We're not less likely to be succesful in life statistically. Or at least, you're going to have to further qualify and contextualize that kind of statement. - >I just need to realize that I'm a healthy dude, and speech is only one part of my personality >we should try our best This is absolutely the right way, and it's good that you've arrived at it so early in life. - >feeling down because of the stuttering psychological effects This is something you can work on from two angles. One is, obviously, that you could try speech therapy to see if you can get better at managing your stutter. The other is that you can keep up your positive outlook on life, as you outline above, and actively make yourself familiar with your reactions to stuttering, such that it doesn't get you down. This is not a trivial thing to do, but if you're in nice surroundings, it's easier. Hang on to the nice people you find - that's obviously a completely general thing to do in life, and it works with stuttering too. Don't forget to share with those you are close with.