That depends on a lot of things dont you think? Simply selling away bitcoin when it was 10$ would have ended in a bad decision if that person was alive to sell for 10k $ in 2017. People dont understand the stuff that drives the market or how things work here. Bitcoin does have a lot of support from those who believe in it and those who see the future in it. Of course you may panic and sell at a loss if you prefer to like that and not see the long term effect.

However good things come to those who have patience and patience is very important in any speculative market. Being biased and impulsive will only lead to your losses.