I'll help you push you car. I'll hold the door for anyone, I'll let you in, in traffic. I'll over-tip the wait staff, even the ones having a bad day. I give kids in my neighborhood freezypops when it's hot AF. I'll go out of my way to make sure your food allergy is covered and you'll have safe snacks at my gathering.
I won't give the guy begging on the corner money. I won't help you forever if you never reciprocate. You skip a paycheck, I won't wait for you to get it sorted.
I won't remember that you hate mushrooms. I won't remember your kids name or wife's face. I'll forget you birthday if it's not in my calendar. I'll tell you I need to focus on something for an hour and go take a nap.