selling a portion of it will make more sense than selling all of what you got in your portfolio. It is an investment that’s already projected to grow overtime and not a short one.
In terms of investors selling there Bitcoin holding I really don't encourage that idea but however if an investor must sell, it should only be in a case or in a point were the amount of Bitcoin they have accumulated is big enough that even if they decided to call it an arriving point of there Bitcoin investment it will be okay, so perhaps that's why even if most people have that mindset of selling it should be when they have gotten to there accumulated targets, then they can decide if they want to sell a little part of it or not, though if the investor has other means of survival I think holding all the investment will be better because as time goes by that's how your investment is appreciating.
Well I feel even before making the move to accumulate or save up bitcoin the investor must have set aside means to which he or she will be getting funds for their daily consumption purpose and also maybe even set aside emergency funds to tackle many other things but if he hasn't then that's just going to cause some kind of inconvenience in the future but when all these other ways to taught off then easy holding of your Bitcoin will be very possible and it would even help your savings a lot because it growth would be a lot faster than the case of you actually tempering with your Bitcoin occasionally.