Those of us who plan our investments for the long term will always advise investors to focus on buying rather than selling Bitcoins. We usually invest in our own strategy and we have the idea that we will invest whatever leftover money we have and just keep doing it. When I sell my investment but after the sale I have no expectation but when I have the investment I have the expectation that I will sell this investment at the highest price. That is why every investor should have specific goals. Just like I won't sell an investment until Bitcoin hits $100k, other investors like me should have such a long-term plan and have their own expectations. So from my background I would always advise the investor to focus more on buying rather than selling investments.
That is likely our strategy on how to earn a profit. We can do everything because it is our money, as long as it is aligned with our plan. For me, selling may not be the best option, but when I saw that the price of bitcoin is at its ATH, I couldn't afford to miss it, so I definitely sold some. If we know when to sell, we also know when to refill our wallets.
I think we have to be more considerate about the market volatility and take advantage of it because that is our chance to make money. Sell high and buy low; this strategy simply works effectively. We just analyze the market condition and take action based on our observation and market analysis.