There are always better options than taking your own life. If you're feeling really down, think about talking to a professional counselor. They are trained to deal with tough emotions and can guide you towards a more positive state of mind. You're not alone in this, and there are many people who care about you and want to see you happy.
Taking your life is a permanent solution to a temporary problem. As a teen, you might be facing a lot of stress from school, relationships or family. But these are things that can be worked on. You could also look into joining support groups with other teens who might be going through similar struggles. It can be very comforting to know that you're not the only one, and sharing your story can be the first step towards healing.