Advice needed

Please,I need your candid advice on what to do.I am a Guy who,might not have the money right now,dont know my talents in order to develop it.But I am sure of one thing,that God has given me the brains of study.during my early childhood thats primary school as it is called here,I use to come tops in class and perform in art shows and all,things later turned around in my high school or sceondary school as it is called here,and I found myself dropping in grades.I tried picking up,and pass and now I have gained admission and would be out of the university in 2008.my problem is that I dont read and when I try I find myself struggling with sleep and if I eventually read its not up to an hour.but I still find myself passing my exams at least at credit level.my mind tells me I can do a wholt lot better because I know that stuff I am made of.but some how as I try,its not easy.times,I say that God has taken the gift he gave me and am confused and praying that I get it back.what do I do to boost my grades?thank you for your advises I really need it to sit up and know what to do.