Hi 9899, welcome to the forums and thanks for posting your comment.
Just because you call yourself a failure, certainly doesn't mean you are, a person only interested in computers can't be expected to work as a brickies labourer if they don't want to, and the same goes with you, if you aren't interested in uni then there's no reason why you should continue.
None of us can succeed in everything we want to do, however, this fear of failure causes you to unconsciously damage your chances of success and by drinking is the way for you to escape.
That's a secondary cause for you to deal with and we can help with this but first of all either defer your uni or decide to end it, your family and friends will understand and support your decision, why because they have up to this point already and would only want you to do what you want.
Hope to hear back from but before I go can I ask you what other careers or adventures you want to do.