Sad...=(

I'm getting rather drained mentally, emotionally, and physically lately...I feel like I'm going to faint all day and I feel as if my head will explode? To make matters worse, I have to raise up my grades and there's barely anytime left. I try and I try and yet...I still fail. Maybe I really am a failure? I usually don't let things get me down but this time, I'm just too tired to fight anymore. I'd rather just let everything engulf me than to keep on fighting. Though they don't mean to, everyone around me is pressuring me to excel in this or that, and I, I've just lost any will to try anymore. I just want to do good without fighting anymore, I don't have the energy or will to fight. Someone just please shoot me or something. Release me from this...suffocation. I am really at my wit's end...someone, anyone, help me please?