Unless you challenge your mind and body, how would you evolve?
Don't criticise people.Correct them. It's so easy to complain than to fix what is causing the complaint. Don't just ignore and walk away.If you feel something isn't right,try to bring a small change at least.Cascade of big changes will come along with you just taking the first small step.
Being a part of something special doesn't make you special. Only you can make yourself special.
Having a bad trait isn't bad.The worst is when you are defined by that trait itself,undermining your virtue.
Our identity not only defines who we are.It also defines what we are not.