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 do agree with this. I have done something similar like this before and the idea was that I would invest, take out my initial capital and reinvest that to something else. Which means that eventually I would have my money back, and investment into plenty of projects. It worked until a point, I had 11 coins/tokens that I invested into without a single payment out of pocket, I would double my investment and take out my initial capital, that way I would leave with my initial investment amount in there without any money because I took my money out.
I eventually reached to a point where it was bear market and I lost it on the last one, and everything else dropped too, so all my investments totals became my initial capital, but I believe in the future when bull comes, it will be awesome again.