This is a quick one.
It’s the basic law of behaviour change. One of the most fundamental ones there is.
You. Get. What. You. Reward.
Meditate on it.
You get more of what you reward and less of what you ignore.
The next time you are berating someone or ignoring their good work remember that.
The next time you are wondering why your staff don’t seem to care about deadlines try and remember the last time you actually thanked someone for handing their work in on time.