I always like to be kind and like to mention without expecting anything in return, just because it gives me satisfaction, including helping others in any way I can. Recently a colleague here had to have a quick operation, no one knows but me, she trusts me, and she is far away but I left what I had to do during the day to accompany her because she was suffering from anxiety, every day until she had the operation and everything went well. She is immensely grateful for that time.
Many times I receive little things from people that I don't expect and that makes me feel good, it's a back and forth. Giving without them knowing that I am me.... fills me with joy!