Frankly speaking, it is unfortunate in some ways but I think success has a lot to do with looks. Of course substance, intelligence and so forth matter too. However, looks are the first thing you see. That fact can't be helped. And I do not mean only with regard to people either. Successful advertisements have to look good too; that doesn't mean be beautiful, but something about the way they look needs to catch the viewers eye. Then people will pay attention to the content. I think the same is often true for people. You need to advertise yourself correctly if you want success, and your look has a lot to do with that. However, your look doesn't have to be beautiful, only appealing in some way. Not all appealing things are traditionally pretty, but they are interesting, colorful, exciting, different or well put together... things like this. Well, that is just my opinion. I think plenty of people succeed without worrying about their own appearance. But perhaps they succeed in spite of it, if you know what I mean. It never hurts to take care of your appearance.