Do we as humans have the ability to change?

when I ask this question I wander what are the things that could be changed in us?I think that we all agree that nowadays the human can change many things within his body, but here we are not talking about that we are talking about the things that are not that obvious but still if you have a good sense of self-awareness you would see and want to change if it needs change.

So do you think we have that ability?

Personally, yes we do and why I believe in that because I know for a fact that over the years I tried and I succeeded, …