@Furgar I disagree in part. You should not worry about impressing others unless it serves as a means to an end rather than an end itself.

You should be more selfish because you will quickly realize that to acquire all that you desire you must help other people acquire what they want. If you're introspective, you'll learn as well that all those things which you enjoy aren't you. Being selfish is paradoxically quite outwardly focused.

Don't be humble. Be realistic. Value virtues in all people.