Always desire to learn something useful.
Our brains are sort of like muscles. I don’t care how well you worked out in the past if you quit working out you will eventually become just as weak as someone who has never worked out. It is the same with our minds. It is possible to be top of your class, and a few short years later be as dumb as the people that you used to make fun of. Three times a week or more you need to put down the remote control and do something that will take your mind to new heights.