My mentor actually hold some bitcoin from when the price was $200 but I think if you buy and hold from $10,000 not a good idea (at least in my opinion).

At this 5 digit price there is more down side then upside potential but as long as you have a plan for both bear and bull market you should be fine. Flash crash always takes time to get used to.

I remember losing 50% value on my positions a couple of months ago. It sucks but we all have to go through with it.