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.
Very much true, if you can't add more to your asset it's still better to keep holding, if you don't want to lose anything from your investment maybe you should take some break and forget to look at your portfolio, it will help you to survive this ongoing corrections. Missing the bullish opportunities doesn't mean that you should sell it out due to correction. It applies with good and solid assets, but better to study deeper to understand the whole market and not to just doing a wild guessing each time the market moves.