The two go hand in hand. Changing environment may change attitude and changing attitude may change environment.
What’s happening around us yesterday or today we cannot choose, there is a reason for everything that needs to happen, how we face if it affects us, then we can start to play the best role God has given us. ~ Catalina Tolentino
When one can change from within, then their world changes. The environment is simply one’s mirror reflection.
Allowing your past pain to affect your present situation 
If you can’t do anything about something 
Sometimes, feeling pain is a good thing 
Speak only when you are sure