Should I just call it quits with my boyfriend?

We've been dating, on and off, for almost a year. But things sometimes get weird between us, and he also has hereditary depression. I feel like if I do break up with him, something bad will happen. That's what happened last time we were on a break. And I'm just so confused. Everyone keeps telling me to break it off. He's just so overdramatic about everything I say or do. I feel like it might not even be worth it anymore. PLEASE help!