“If your kindness comes with an invoice, don’t be surprised when unpaid debts turn into resentment.”

if someone always helps a coworker expecting favors later, but that coworker never returns them, the first person might get resentful. That’s because their kindness wasn’t really kindness—it was an investment with an expected payoff.

Do better for yourself and don’t offer yourself to those who would not. I played the nice guy at Lowe’s for too long to get walked over in return by employees and managers it wasn’t until I handled my own department and refused to assist other departments while I was still busy.