If I had 1000 bitcoin in 2010, I will still hold it until now or at least until the price can increase to $10k, and I will sell it for some bitcoin and get my biggest profit. I will not sell all of 1000 bitcoin because I want to sell them for the other high price, and I will still hold them in my wallet. The only worst thing that I regret is I am not joined with bitcoin in 2010 when the price is too low, but I still search for the other job in my real life, and although I am familiar with the internet at that time, I did not try to search for an online job.