Sure if you have long term investment ideas, then you would likely not be selling any of your bitcoin now, but I doubt that the reason would merely be because you expect profits to be guaranteed in the future, but instead that you had made your investment into bitcoin based on a long term investment thesis and you are not merely thinking about short term profits.
A long term investment idea is depend on what you have in mind and your target, some do not calculate the future well and they began to sell their bitcoin, what triggers some people who is inquisitive to sell their bitcoin right as bitcoin is increasing is because they believe on the physical increment of bitcoin and they don't make use of chart to know what the future will yield, secondly, their is different between someone who is into long-term Investing and short-term investing, someone who into short-term investing doesn't think of the future it only be interested of making an instant profit whereas long-term Investing somebody is concentrating into the future and that is why a long-term investor keeping holding it bitcoin knowing that bitcoin might keep adding in value and as bitcoin is adding its making a profit
It is based on your mindset that made you to start your bitcoin journey and the love you have for bitcoin as an investment that is worth hodli for a long term. Some people are into bitcoin investment to sell and take profit, while some long term hodlers believes in bitcoin as an investment that is worth having till old age, just the way people that have gold as an investment prefer to keep it till old age as long as they don't depend on it to survive.
I guess that is why people like JJG who are among the early investors in bitcoin has the same feelings because holding bitcoin as his investment gives him joy. But most bitcoin investors are only after profit taking and not loving it as an investment. I ran into some financial challenge recently and I need to take care of it, I almost sold some fraction of my bitcoin because my emergency funds is not able to handle it, I sat down and thought over it and I never liked the idea of selling because I feel that I have not reached 50% of my bitcoin target.
What I did after much thought was to go to my Boss and get a salary advance which I used to solve that emergency and I got a big relief and happiness that I didn't sell a dime from my bitcoin, even though I was on profit.