Never believe anyone who says you cannot change, or that you should not tamper with your personality.
The truth is, you are already changing numerous times every day.
And it is never too late to contemplate a change in personality, which simply means changing the way you see and respond to people and the world around you.
It is up to you. You can either live with the pain that is known as stress - it's what most people do because it seems the easiest way to live - or you set off on the adventure of self-discovery.
This is not some New Age fashion. Every time you change one of your old habits, of creating pain as a response to life, it will be one more step towards enjoying a riper old age.
If you want to live a long and healthy life, kill your stress and your pain with truth, before it kills you!