If you're just starting out in photography or want to become more serious about it, think about what you like photographing. Is it nature or weddings or graduates or wildlife, etc.? Start focusing on it + practice, practice, practice.
When you photograph what you love, people can see your passion. Your love for something always shines through your work. That shine will draw people to your work. It never fails.
Take the time to hone your craft. Take the time to figure out what you love to photograph. Then photograph the crap out of what you love.