When I start learning about bitcoin it was already 200$. I am also one of those who witnessed how the price increased very fast in just few years. Now it's almost reach 20,000$ and one thing i learn about it; "every day is a critical situation" in short it is "risk". The good reason about why people hold their bitcoin in this kind of situation is learnings from the past. It's not too late and there's always a hope. Giving up is the only reason you will lose. Have fun risking!.