...Imagine a person who purchased BTC in 2011 and held it for 13 years, his profit from this investment is huge. Now think you are that person in 2035, you can calculate the profit margin and this will help you calm your nerves.
It is very difficult for me to imagine such investors who have hold Bitcoin for 13 years. Who are these people who resisted the temptation to sell their coins when the price increased by tens of thousands of percent? I would never become one of them, since I can't hold my coins so tightly.
Don't be surprised there are people like that guess you've never met them before but I have. Since most of them are potential holders some of them who still have their Bitcoin intact for a long period are people who discover about their portfolio late. For example, those who forgot they have an asset somewhere will alter in the future and remember and by so doing they have made a lot of profits for those number of years they forgot about it.