Spend more time around people. Don't be mean or rude; you do not want to lose friends. If you want to make friends, you first need to put yourself out there somehow in order to meet people. If you're still in school, sit somewhere with other people. It doesn't have to be the "popular" table, or a crowded one, but one with at least two other people. The popular kids won't matter when you're older, but a true friend will be there for you forever. Remember, friends seldom come knocking on your door while you sit at home playing computer games. Popular people aren't always going to be mean to you. They just need to know you a little better.