No, there are not people who just don't have much worth - everyone should be the most important person in their life. Worth has nothing to do with the "reality" of how other people see you, it is how valuable you are to yourself. It has nothing at all to do with anyone else. You're the only one that will be with YOU throughout your whole life, that's why you're #1.
Now, I do have a problem thinking other people suck. T and I are working on that.