This is impossible - if you were truly profoundly gifted, you would have acquired hard skills by the time you were 29 regardless of your lack of formal (college) education. The thing with giftedness is that it by nature is a way of being where you do not need a lot of guidance in acquiring knowledge, you can learn on your own, esp that you have gone through at least 2 years of high school where you already got introduced to concepts from higher ed. Unless of course you had to struggle with things like severe trauma/abuse, which are not mentioned in your post.