I think one of the best phrases I’ve heard from the atheist community is “Do No Harm”. Very similarly, the Golden Rule, which almost every civilization has a version of, says “Do to others that which you would have them do to you”. Beyond that, there are no rules one must abide by. If you would wish others to stand up for you when you cannot, then do so for them. If you wish that people would help you when you are in need, do so to them.
Ultimately, you create your own meaning from the little things you find joy in and if you follow the Golden Rule then you can help others do the same.
I had a lot of fun with some new friends today and I’m feeling good :)