What will you do so as not to burden your mind with bitcoin price fluctuation? We all know that currently the price of bitcoin has fallen by as much as 47% from ATH.
It's actually pretty simple: be convinced that the ATH will be reached again in the next 4 years and stack sats until then.
You can only have a problem with the high price decline if you have invested more money in BTC than you are willing to lose. Mentally, you have to write off the money as soon as you have bought BTC (or any other investment), otherwise you constantly calculate the losses/gains and lose sight of the big goal: to be one of those who can call at least a larger fraction of a whole BTC their own.
It is simple, if someone believes in new ATH, stacking sats until that day comes sounds like a good plan! The problem appears when some people wish to stack more and more (greediness) and they look for risky actions that can bring more sats! It can be day trading or investing in the new projects...
For long-term investors, looking at charts daily, and as you say Lakai01, calculating the lose/gain ratio can be a real headache... you will be in a constant dilemma about what to do, should you buy/sell/short/scalp... while the easiest thing should be investing and forgetting about your investment for a longer period! It would be nice if you can add more money from time to time (when some dip comes)!