Dont be quite if want something .
Patience is virtue .
Harden my mental .
People always have choice .
Violence is not the answer , but when diplomacy fail....
Know when to push , and when to step back .
People my shit on you once , dont let it happen for 2nd time , if not , there will be 3rd and so on .
Dont smile to much , just when necessary .
First impression matter .
Dont waste time on small issue .

Just some of it . Cukup ?