I think he is selling himself short. He is saying that he wasted three years of his life and now he feels stupid. I think that's a normal reaction. I applaud this guy. Mark Cuban and Jeff Bezos have both made statements about living life with no regrets. What if he didn't do it? Would he regret it later? Surely in the three years this guy learned a lot about building a business, marketing, coding, etc. I'll bet that next time he won't make some of the same mistakes.

In three years he did more than most will ever do in their life. It would be a tragedy for him to not try again at another business and just simply give up.