So I keep hearing HODL, HODL, keep holding and all that. My simple question to everyone is "when is actually the right time to sell Bitcoin or we don't ever sell it"?
depend on how long you wanted , best to indicate your timeframe and not just focus in complete Holding like what the early adopters did, they are great in holding because their capital is just peanut , the amount they use to purchase are the funds we use to called " Can Risk to Lose" but nowadays that the value of Bitcoin is thousand dollars? i don't thin everyone can say that is something they can afford to lose.
How then do we say we have made money from it if we don't sell?
In time that you sell that is the only way you can evaluate your profit so meaning it is your holding that will decide.