#2 Keeping your eyes on the goal(s) makes it harder to be discouraged by what is or gets in between. Don’t be short-sighted.
#3 There are times to keep trying, times to change course or approach, and times to give up. It is not simple, but you must learn to discern when is what.
#4 Not everything is meant for you and walking away from some things does not necessarily make you weak. Sometimes it is wise.
#5 There is merit and reward in going after quick and guaranteed results, but you may gain more by being able to delay gratification and persist over a long and uncertain period without it.