If you really want to become proud of yourself then focus on making yourself better. Improve everyday, improve your actions, improve your routines, improve your mindset, improve your habits and don't tell it to anyone. Just stay humble and work hard, you don't need to tell the world that you're getting better, just keep it to yourself. Watch yourself, just appreciate yourself silently. You will become proud of yourself, you will become more confident if you're not wasting time and all you do is get a little bit better. You will feel really good of yourself if you're taking care of yourself and doing your responsibilities as a man. Don't be a time waster, don't do stupid stuffs because it is fun because it will destroy your confidence later, you have to do what is hard, face the pain and evolve.