I guess the biggest regret her is when I sell a coin or maybe that is a token that easily without knowing that it would increase its price next week, maybe tripled I guess. I regret that so much that I hold that in long tome and then I got bored then I sell that even though it is in the near peak of increase. Because of that I learn to wait for the increase with a pattern of researching if the coins and tokens that I was hodling will increase.