Is it normal to change your personality

Of course its normal to change your personality. you werent born to be boring or introspective or extroverted. I can see the conflict you have with "changing" your own personality.

Its a result of living lifw and being human. We imitate that which we are comfortable with, surrounded by or are heavily influenced from.

Yes it would be great if you change into a better person :)
But I don't like people at all who turn all goth/emo or something and think they're cooler. I want them to stay the same.

Yes! I went through a total life style change at one point in my life. It was one of those positive aproach to a break up things lol

Just change gradually. Sometimes you need to work on your personality and change your thinking to be a better person. I know I'm not the same person as I was in highschool... or the start of college for that matter

You can never be the same person you have to change it up! Otherwise you'll be boring. So, yes it's normal to change your personality.

Gradual, healthy changes are better than quick, shallow ones.

I do it slightly from time to time.

Totally normal, I think people just change over time

Yes but it's no good.