There are more ways than one to measure profits and losses.
Apologize when you screw up and focus on other people, not on yourself.
Proper apologies have three parts: 1) What I did was wrong. 2) I feel badly that I hurt you. 3) How do I make this better?
The brick walls are there to stop the people who don't want it badly enough. They are there to stop the other people!
Show gratitude. Gratitude is a simple but powerful thing.
Find the best in everybody. Wait long enough, and people will surprise and impress you. It might even take years, but people will show you their good side. Just keep waiting.