Do the work; what else do you expect people to say? If you got off this site, got a good night's sleep and started making a pro-active action plan in the morning, you'd be in a much better position. Of course your target is achievable, but you'll have to work your socks off for it. There's no magic formula; pay attention in lessons, do all set classwork and homework, revise at home, do past papers, etc. Nothing other than you yourself doing the work is going to make this happen, and nothing anybody says on here is going to change that.