Somehow I always want to say what I want to do, let them supervise themselves and give themselves motivation. Sometimes they think I'm pretending, but

Speaking what you want to do is a kind of self-confidence. If you think you can't say it, you will become a joke to others. It's that you work hard for your own goals. You dare to think, do and struggle. If you are not mature, you will not work hard for it. If you don't like doing things in the future, you can also achieve the results you want. Thank you. I hope you can accept my suggestion.