Education 

"Education is the latch key to success in life"

Gorden B. Hinckley 

This quote means that in order to a great life you need a good education. So if you have a bad education you will probably not have a great life. 

Example: What if you wanted a job that involved a education and you didn't have that because you never had a great education. And if you had a great education you would have gotten that job you wanted.