I have come to the conclusion that I have a problem! Which is inhibiting my educational success and myself, ?

I have been in a trap that I was not willing to accept, because of unwillingness to be true to myself, because of that reason I have lost alot of myself. I have a drinking and drug problem that is attacked me and still doing that it has caused much pain and extreme sorrow, greif. I have been lying to mysef and am now willing to admit that there is a problem. I am not going to blame anyone, but would like to add that the environment that I was raised around has contributed to this irresponsible and inapproprate behavior. I am 23 now and on the brink of jumping over the edge of nothingness, but am realizing and still holding on to what is important to me, and that is my success to become more than what I thought was possible, to achieve what I think or thought was impossible and to prove all my critics, and statistcial coventional wisdom wrong. What is the advice in which you would give to me and please give this much thought, becase I am in need of thoughtful advice. What advice would you give to your child forsay? I am currently living in a hotel in which I paid for from savings and soon will have to think of a diffrent solution it seems as if the same old thing is repeating itself over and over again what can I do I have know family support but it really doesnt matter I am a big boy now but in my heart a little child wanting comfort, I am blind to what opportunities are avaliable to me maybe you shall allow me to see what the big picture is and give me the key to unlock the door from where I am to where I want to be, Please Help! Thanks.