I am mostly a hodler no matter the market going down or up. But sometimes I get the advice to take some profits.
Example: my investment of 300 euro becomes 500 euro. Is it better to take out my initial investment or only take the profit ? And reinvest that profit ?
How do you guys do this ?
I just feel like i'm missing potential profits by not selling and seeing my potential profits go up and down.
You should take profits and then reinvest with the initial capital, because in the future the coin may not strengthen, so the potential loss is not too large, but if you like long-term investments, you might start the investment again, but it is better to convert it with another coin more potential, so you have a chance if one does not strengthen.
Everyone I know, they invest more than one coin?
I agree with you, if there is a profit to be made, it is best to take the profit and wait to buy when the price corrects. The market is very unpredictable so you should know how to stop at the right time, not be too greedy, to survive in the market. If it is a potential coin then watch closely to buy back at a lower price, if it is a junk token then you should ignore it and invest that part of the profits in a top coin to ensure safety.