When someone comes up to you and says you’ve inspired them.
When someone sends a message of thanks for something you did ages ago and had forgotten about.
When you remember someone’s name, use it, and they grow a little.
When you see people you’ve connected having meaningful conversations.
When people don’t ask for your help because they’ve worked it out for themselves.
Appreciate these little things. Even if they seem little to you, it’s pretty likely they’re much bigger to someone else.