my biggest regret in bitcoin is when the price of it is low. I didn't buy and hold that is my biggest regret in bitcoin, when the time comes that I have a chance to buy a bitcoin I will the opportunity and trade until it gets a high profit.
That is right most of the people have missed the opportunity, I myself regretting for the time when the price of bitcoin was trading below 1000$ it was just a year before, but i think it is not good to lament over split milk, but should try to invest in current position and get some profit from it.