The best time for buying is at low price and I think if you sell your coins with profit then you should not regret after Fluctuations in coin price because you have already taken your profit so ready to make another step instead of regret about past.
If you are in doubt about other coin then just buy bitcoin now and don't sell until you achieved your target. This time is not suitable for selling but if someone is in huge profit and he cannot hold longer then selling should be preferred. Understand the market and accept your profit but I think if someone is selling their bitcoin without waiting more so he will miss the opportunity of having huge profit in Bull season.
regrets after selling Bitcoin mostly happens because no one can perfectly predict the coin market.
Prices move up and down it's just based on supply demand and sentiment.
if after buying,the price goes down immediately just wait untill it's goes up if you are not urgently in need of money at the time, you just can't predict this things.but it's always save to buy coins when the prices drop .
What are you trying to say, I absolutely disagree with you and I don’t share your sentiment, It seems like you’re more interested in buying bitcoin when you feel the price is satisfactory to you, and with that approach I doubt if you can be able to accumulate enough bitcoin into your portfolio, when you’re buying bitcoin and the price goes down, the best thing you could do is continue buying instead of waiting for the price to go up, don’t you appreciate buying bitcoin on a cheaper rate, you don’t even have to be worried about the price of bitcoin when you’re investing from your discretionary income and you can keep buying and accumulating at a comfortable and affordable rate with the DCA method, my dear you don’t have to wait just keep accumulating and buying Bitcoin. And why would you be urgently in need of money when you’re in your accumulation stages, or are you planning on selling your Bitcoin for quick little profit ?