Category of stuff I knew, but didn’t really KNOW, ya know?:
Funny, as a Highly Sensitive Person (HSP, yes, it is really a thing and explains a lot, LOL!) I always notice if when I comment on a post and the person who posted it didn’t like mine, especially if they liked someone else’s. Just a little nick in the heart every. time. Here is the funny part thoo: I was clearing out some of my art photos and realized that on almost every photo I didn’t “like” some or all of the comments made by my friends!!!
I THOUGHT I LIKED EVERY ONE! Wow, really!? Really!
So this is anecdotal evidence that we are all mirrors to each other and if you are hurt, frustrated, angered, saddened, by someone you are probably doing the same thing to others.
Conversely, good energy is the same way and can be used preventatively. Doing good works for others will have those good works come home to you. Isn’t this really just karma?
I think of Karma as a boomerang and what you stick to the top of that boomerang will come back to you.
Stick only the good!