my biggest regrets in Cryptocurrency is i am not borrow some money to buy some of bitcoin in last year so if i am borrow it, then i will easily to give back the amount of money because i have a big profit for selling bitcoin in $1100 in a weeks ago. But we can not predicted and we don't know what will happen in the future so i think the best thing that we can do for now is continue to trying to earning much of bitcoin as much as we can.