Just continue to be patient man and soon you will be rewarded but as long as you are confident that the old coins you HODL are still stable in terms of developments. The other altcoins you mean might be the newly released coins. It's normal for them to pump at first because people always have the excitement for new things but don't worry because their shine can also fade later on and we don't know what can happen to them next.
Old coins are still better than them because we already know that their chance to recover is high. We already know what effect the halving can bring into Bitcoin and that is it can make its price rise but for Litecoin, it's said that its past halving performance are bad but maybe that will change this time, let's see.
I am, and I believe that litecoin will go high, I am one of those people who hardly leave a coin if it hasn't done anything wrong. Litecoin never has done anything wrong, the price drop or the rank drop is not something related to litecoin, it is related to its investors, a coin or the project team or someone that is core to the coin has to do something silly to make it go down in value to make me leave and Charlie has never done something like that, not anything nearly enough at least.
This is why I believe that it is going to be quite important to keep it. I believe as long as we keep this pace, then it is going to be top ten and stay there for a long time and be valuable as much as it can get. That's why I keep holding it and will hold it for many years.