Be confident. Stop thinking you are ugly or that you aren´t cool enough. Everyone is either beautiful on the inside, outside, or both. Be comfortable with that! Think of your qualities for a while. You´re cool through them. Just belive in yourself and let people meet you. If you don´t feel it, fake it. Think that you are cool and pretty, because once you start beliving it, others do, too, but don´t be conceited. Also, to be confident wake up every morning and tell yourself how pretty you are. It may sound conceited but it´s a greate way to start the day. Nobody will belive your beautiful if you don´t.