Often, people ask me about how to motivate employees. My answer...you shouldn't motivate employees.
Of course, you should appreciate, recognize and appreciate employees. But your job is not to motivate employees. Your job is to hire the right employees and they will motivate themselves.
Hire people who want to be great. What many think is motivation is really manipulation. Do you think a pizza party or casual Friday matters to great employees?
If you want to motivate great employees, make sure you give them a safe place to work. Also provide plenty of appreciation, recognition, and encouragement. This is what helps great employees thrive.
Personally, I have a fear of failure. It drives me. I want to be successful. I want my wife, son, and grand-kids to see me as successful. If you understand what drives people, you can help them achieve it. This will be more successful than trying to motivate people.