Focus on what's important, we get so caught up in our own world we forget to focus on the important things. Don't waste your time on anything from the past, don't waste time thinking about what you don't have, stop focusing on negative people, and stop comparing yourself to others. Focus on your dreams, goals, what makes you happy, and all the good things in your life. The more you sit and think about everything wrong, the more negative you become. Fill yourself with more positivity, be greatful, and take care of yourself, and again always focus on the important things in life.