Op never replied. Oh well.
His last post was in Service board. He may forget that he has a thread in speculation board because there was something that caught his attention on the service board. 
Yeah, as we can see how it is going up day by day, the answer is simple, you should keep holding as long as you can. Life is sad sometimes and you end up with a problem where you are forced to sell, unless something like that happens to you and you have the possibility of holding without worrying about money then I would say holding it is a lot more important.
You don't need to hold it forever!! You need to understand the price cycle, so you know well when the best time for buying (entry) and selling (exit). Every investor must have a goal for their investment, just hold it until it reaches the goal. Most people must set a target for selling their Bitcoin above the last ATH. Since the last ATH is about $69k, most people probably sell their Bitcoin when the price will be around $70k-$100k.