Get over the idea that only children should spend their time in study. Be a student so long as you still have something to learn, and this will mean all your life.
Those who do the most for the world's advancement are the ones who demand the least.
Plenty of men can do good work for a spurt and with immediate promotion in mind, but for promotion you want a man in whom good work has become a habit.
Change this and that and try again. Duis mollis, est non commodo luctus, nisi erat porttitor ligula, eget lacinia odio sem nec elit. Cras mattis consectetur purus sit amet fermentum.