This reminds me of a young kid who wanted constant attention and never changed the way he looked at things - which was me. I yearned for attention and would do anything to achieve it, in the most ridiculous ways possible. I wanted to change things but I kept on approaching them with the same perspective and goal. Pretty sure every young kid went through this, and it's a part of identity and trying to find the right place. Don't worry; it'll come in years that follow. It's something that everyone has gone through, and it's only expected. You won't magically change once you turn 12, and I can tell you that. Change takes time, experience, and rough times. The situations you go through, the people you meet, and all the problems in your life will shape you. You seem extremely eager to be someone else, and honestly, unlike everyone has been saying - it's a matter of individual pace and growing up. Don't stress, because despite what you've been told it's not something that needs to be acheived through meepcraft, it's something thay needs to be acheived through life.
You're only going to hurt yourself by worrying about meepcraft like this. Leave if you like, live your life, and come back. It's ok to put things on pause. It's hard though.