Integrity of character is the best for all people in any age. It is all we have that others can rely on. It may be hard to do (ie. you will not always make friends) but it gives a sound foundation that can be counted on.
That is easy the best person of all ages is definitely God. He even created the earth, and you can just look around and see how great, awesome, and wonderful He has done! :) So you should be grateful...