Ah, now I get it. I think. Anyways, I always start ranting because I'm poor and life demands exceed my economical power.
If we mean about personal change, pyschological, behaviour, or even personality, then it is inevitable. If I'm not mistaken, the brain always loses details about the "past", and when it tries to access to some of these, it just makes them up. THEN I talk to someone and tell him/her about it, and he/she says "NAH, it was totally different!!", hits me in the face, and I cry because of my incompetence at retaining memories.
Now you know why changing things is bad.