I dont know if you are still holding your bitcoins or already sold them! Firstly, you if still holding and you already satisfied with profit, then feel free to sell it or some percent of it from your total assets. Although bitcoin grown upto $10k, which is happened less than within a week but people are still confused to considered it as "up tread". So if you don't want to take risk, then you can sell and you already sold, then i suggest you not to buy right now. Wait until for strong sign
I think this decision on selling or holding bitcoin is a personal matter but if we talk on investing in bitcoin for a long time then the chances of lossing profit is much less. I suggest when you hold your bitcoin and the price of it is already enough for you then I guess it was the right time to sell it but, if the price is not yet enough for you or else if the price is not increasing even a small percentage then hold it and wait. It's better to focus and have proper knowledge about it to not loss a huge amount of it.