Honestly anyone investing in bitcoin should know this and also separate their money into different category.
Managing to survive in the market volatility is a lot easier when you got money stashed for your emergency situation, so you won't be those kind of people who panic sell and become a paper hand.
This is exactly what I did when there were many dips before the big rally comes in, since I stashed money for emergency fund I can just ignore the dip or buy it even, and then move on.
As a result, I still hold my BTC all the way until now and will still be holding it for years.
Not agree at all. Bitcoin may go down, but if you keep some cash on the side just for emergency, then you are not really utilizing that money at all.
The best method is put all your money into bitcoin, and yes if something bad happens you are going to lose a lot of money by selling your bitcoin when it is down. However, if you keep on thinking the bad side, you are not going to make any profit at all.
The best way to move forward would be making sure that we are betting our money into bitcoin going up.
So for example, if you held some money on the side for the past 1 year, you would have lost a lot of profit chances. The best way is to keep all of it in bitcoin, but be smart about it, do not buy all of it when it is all time high, consider buying when there is a big crash.