I disagree with the idea that to succeed in life, you should have only an attractive appearance. While there is no doubt that it is an important feature for people, it is also undeniable that by having a good sense of humor, and a sharp mind,you can make it easily.
On the one hand, if you have a good sense of humor it is advantageous because you make a positive impression on other people and everybody talks and thinks highly of you.In this way you are very likeable to others, so they can not probably see your weak points.For example, there are many artists who had an important career and they are famous in the world, like Mr Been without being good-looking.
On the other hand, having a sharp mind, has a lot to offer to everyone who wants to achieve something.Cleverness provides people with the opportunity to do everything they want. For example applicants with a sharp mind have more chances to take a job in an interview compared to others who don't. They have better ideas and they negotiate the situation with more confidence.
From my point of view, the good sense of humor and a sharp mind are the best qualifications young people should have to achieve their targets, and to have a brilliant future.