I'm not sure how old you are, but I'm guessing you're pretty young. The older you get the less a year or two matters matters.
By the time you're 30, no one (not even yourself) will notice that you are 2 years behind your peers (based on whatever metric you're using). In fact, the older you get, the harder it is to measure what being 2 years behind even means.
And, just think about the huge variations in life span. Say, for example, George finished college 2 years later than Bob. However, George lived to 90 and was able to do productive work right up to the end, and Bob died at 78. George had an entire extra decade, even though he had a slightly later start.
However, I think it's important to be able to look back at everything and find the positives as well. I think you should take pride in where you are and where you come from. This kid has his story, and so too you have your own, just because it's different doesn't mean it's bad, it's just who you are, and that in itself holds a lot of value.
Losing these regrets have made me much much happier and I enjoy a lot more of life now.
EDIT: and no, I didn't mix up b and d when i was 5 years old. I was able to read fluently and to write pretty well. Who cares if I wasted my youth on videogames, I'd do it again.