Why can't I control myself?

Sorry for my English.

I don't know what I want, I can't control my actions and attitudes most of the time.

I'm impulsive decision maker, I have a lack of self-confidence. I feel very inadequate, empty. I get along with people, but can't be sincere. I'm always trying to prove myself. I'm obsessed. I easily get upset and worry about everything. I am unhappy and sometimes aggressive and depressed. I live in a fantasy world. What else will I do? Why am I like this? Is there any way out of this situation?
Why can't I control myself?
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