In appearance, personality, or overall development?

It's normal to change very quickly, yes. It's also pretty normal to be confused about or unhappy with those changes. Decide who you want to be and make adjustments as needed. You've got the rest of your life to figure it out. Good luck.

That isn't a mid-life crisis. A mid-life crisis is when you start realizing how old you are getting and start thinking about your own mortality and major life decisions you may have failed or could have done better at (and not just in the same way that anyone can have regrets). And it effects your decisions and way of thinking, you might start doing things to make yourself feel younger.

Just wait until you hit your 30s... you're going to look back at you right now and wish you were this nice.

People change constantly and it is totally normal to have a crisis of self at any age. Maybe not in infancy but maybe that's why they cry so much.

Ill be 22 in ___ years :) np im feelin sorta the same