Can you personality change?

I believe that NO. You born with a personality, u'll die with it!

Your personality is influenced by alot of factors, but if you can analyze where they make their biggest impact you can change how you handle things differently. There are many methods like meditation, relaxation exercise and such, that can help you remain calm if you are the type that gets upset easily. You can change how you interact with peple if you remember to stop and think about what they actually say and then focus on that without just reacting blindly. Its alot of work but change is always possible.

I think your personality can definitely change. I did a personality test on the internet a few years ago which told me that my Myers-Briggs personality type was INTJ. That means, Introverted iNtuition Thinking Judging. Well, since then I have become a lot less organised and ambitious than I used to be, and now I come out as INTP. That is, Perception rather than Judging. I used to be very work-focused and plan everything in advance, but nowadays I care more about living in the moment and enjoying myself.