Should I seek help? I sleep when I'm sad?

Whenever I get depressed or sad, I try and sleep it away. I'll sleep 10 or more hours a night just to escape those feelings. I know it's probably cowardly, and immature, but sleeping helps drive the thoughts and feelings from my mind. It's not really a "healthy" way to deal with it, but it's really the easiest for me. Should I seek help with a therapist or psychologist? Or do you have other methods of coping with sadness I could use? Any advice, really. Thank you.