Many business people I have met are workaholics. They work hard and create a lot of success, but seldom celebrate success or, they celebrate it for a few minutes and move onto the next goal. The message they convey to themselves subconsciously is that it is not a big deal to be successful.
However, if people took a time out and enjoyed their success, they would be inclined to do better next time so that they can celebrate even more. By so doing they would avoid burn out.
Happiness is not a destination, happiness is a journey. Celebrate life, you only have one life!