As adults I think it's pretty immature to recognize a fault and then not even attempt to change one's behavior in a positive manner.
...and my actual life takes up a lot of time...
As adults, I think its pretty mature to accept ourselves the way we are, and move on without wasting time agonizing over our many imperfections.
Faulty or not, I still have stuff I need to do.
I'm short, too, and I've learned to accept that, just as I've learned to accept the fact that some of my friends have more people posting "happy birthday" on their wall than I do.
No visible progress != not even attempt.