What's going on wrong wid my life?my life is lyk hell ....help me pls :(?

i'm not performing well in my studies,i've no gf,i can't be regular in any work i do (initially the work luks interesting to me but after a few days i feel bored frm the work nd i got angry if any1 suggests me sumthing.i give up any work so easily.when i got the results i tried to change myself but again came back to the same track which leads to failure nd disappointment.wat i can do ?