Think before you do something today that could cost you dearly, do not let your ego lead you astray.
You need to look ahead to the consequences of your actions today, especially when something is tempting but will cost you something in return. Is it worth it? If this is led by your ego you need to hold up there and think carefully. Be aware of how you are coming across to others and remember to be modest and humble will get you much further in the long run.