To help yourself, find someone else to help. Helping others is a deep human urge and has been with us since humans first banded together to help and protect each other. When you are able to help someone, the brain releases dopamine which is a neurotransmitter that makes you feel good.
There are many ways to helping others. If nothing comes to mind for you, simply tell yourself that you are looking for someone to help. That primes your brain to look for opportunities to contribute. Even if the pandemic prevents us from meeting in person, you can answer questions online, or shovel snow for your neighbor, or do other physical tasks that don’t require proximity.
Two kids in the US decided to show their appreciation for their local medical professionals. They went to the parking lot of a local hospital after a recent snowstorm and cleaned the snow from people’s cars. There are lots of ways to help if you look for them.