7. 8.2 billion siblings
Nowadays, I find myself interacting with everyone as if they were my siblings, no matter the age. While many do not likely see it reciprocally, I find that it does not matter that much, as in, reciprocity is not needed to maintain this point of view.
If you have multiple siblings, I am guessing that you will agree that some are more enjoyable to be with than others. However, no matter how bad the relationship gets, you keep them in your heart. You wish them well.
I find life so much lighter to live when I apply this to everyone. Yes some siblings might hurt me, but just like when that happens with a sibling, I believe that they just did not know better.
For having been a bad sibling in the past, I am confident that the joy they get out of hurting me is insignificant compared to the joy they would get if they were given the tools to enjoy loving me. I think it's all a matter of not having had the chance of being aware of the self-generating rewards that come with being kind.