If we are long-term investors, we never have to worry about the current market situation. Indeed the best thing to do is to keep calm and hold, and never mind about the price decline. As long as we are investing in trusted and usable projects, it eventually rises when the market will recover. But with those coins that OP has, I don't think this will have a big chance to recover, yet it is just a little chance. If I have those coins, I already sell them earlier and not to wait for another crash as surely to fall hard than the others.
That has been the key to my "success" so far as well, obviously as a third world nation person my profit is lower than most peoples weekly salary in London or New York, we all know that. Those guys pay like 5k dollars per month just on rent if you look at it that way, I haven't even made 5k dollars profit so far, BUT the good news is I am working in my nation and living here so that means my profit is good enough for me.
All thanks to long term investment and ignoring the volatility. Why would I care that it is low right now, my goal is to hold it for 10 years, so what happens now doesn't matter, and I do feel the same way when it is going up as well, not care.