Is it possible to change one's character?

There are some things about myself that I want to change.

Things like the way I think, what i think of myself, etc etc.
可是，怎么去改变一个人的本性呢？


I tend to think a lot, I'm indecisive and I hate to admit that I'm flawed.

I'm always trying to be that perfect person which makes me lose confidence even more at times.

And I wouldn't admit everything i just said above all the time.