I'd like to lay out some thoughts and hopefully you guys can help me sort through them. I'm still a beginner but I'm trying to learn from my past mistakes. And I've noticed that many people (if not most people) will sell half of a given coin, once their initial investment is covered. So basically, when they've doubled their money.

A hypothetical example to help me understand: If you bought $100 worth of coin X at 50 sats, you would then sell half of the coins, once it reached 100 sats. Because your initial investment would be covered. And you're still invested $100 into the coin, you just have half the amount of coins now. But you've got $100 extra to play with. Likely in bitcoin, which is what you traded half of coin X for once it doubled in price.

But, you are interested in long term investing in this coin. You like coin X, think its a good project, and have done your research and decided that you want to be a long term investor in coin X. And you want to acquire as much of coin X as you possibly can. That way 5 years from now when its time to sell, of course you make a lot more money because you have a lot more coins to sell.

So is selling off half, to cover your initial investment, a viable strategy when it comes to long term investing? You could just wait until you saw coin X plummet back down to 25 sats, or 35 sats, or whatever, and take your $100 and buy more of coin X. In this way, you actually end up with more of coin X, than if you had never sold at all. Is doing this a good idea? Or is it too risky? Because perhaps coin X never goes back down to 25 sats. That has been my fear, and why I have yet to be able to convince myself to do this. What are your thoughts and opinions on this? As a strategy for acquiring more of a coin you want to hold for the long term.