The Tikkunei Zohar says something incredibly cool. What makes the Angels give each other this permission? [After all, each Angel has a fixed lot and a fixed role and cannot effect change in and of themselves?]
When Bnei Yisrael share Torah or money, they cause the Angels in heaven to share too.
Giving a dollar to someone who needs it, or exchanging a few words with a friend seem like inconsequential forgettable actions.. but in the heavens huge winged beings of fire are affected and fundamentally changed by those same actions.
Just by reading this right now you had a profound affect on the world we knew. It's different now than it was when you started.