If I sell last November, of course I see the market at this time I can use to buy again, unfortunately at that time I bought a lot so that the condition was to buy expensive and the price continued to decline until now, of course this is regret, but I will hold and sell only because Profit.
You never know what would happen in the future, at the time I'm sure you see that the price is cheap and you are expecting that it will rise over time. Now, we see a major collapse of the market again, however, you should not panic, see it as a normal thing, if you cannot buy again, just hold and trust the process, eventually, bitcoin will pump and the rest of the market will follow.