The point about the pleasure/pain imbalance is interesting. Think about how people slowly develop tolerance to drugs/medications that make you feel better and require more of it to get the same effect, but with pain we have the opposite situation, where constant suffering leads to experiencing even more suffering in the future through the process of sensitization (there are some theories that a lot of chronic pain is due to this rather than the original injury). It really doesn’t seem fair how massive this imbalance is.
I’ve slowly realized that I probably won’t ever figure out exactly what will make me happy, but I definitely know what makes me unhappy, and it’s much easier to develop a life plan based on avoiding negative things than pursuing positive things.