From 4:00 A.M. to 10 P.M. ? That's 18 hours per day. I thought the law prohibited that kind of thing. Are you in the U.S.? Are you getting double-time pay? Something isn't right about your job situation, to say the least. It's no wonder you have no social life. You should get 8 hours of sleep each night. Where are those hours to be found with your current job?

Man, your health is more important than the current job. I'd get another form of employment before I'd spend 18 hours daily in physical labor when you aren't even given safe hours away from work to maintain health. It's also a wonder that you haven't had a complete breakdown physically.

Please go in to talk to a psychiatrist and get counseling for yourself. You're being taken advantage of big time in your work situation. That alone is a reason for seeing a psychiatrist if for no other.

Take care of yourself first.