Donald Trump. Think like a billionaire (№ 304533)

Strive to love your work, but be prepared for the fact that someone each day would certainly stop you from enjoying it. Such an attitude will best prepare you to the difficult routine of the business, and will also help to relax and not to lose optimism.
If you already feel that you love your job, all the time strive forward, never stop and don't give up under the pressure of circumstances. Even if you can see the concrete wall, be ready to break it. Life is extremely hard, but hard work can make it a lot easier.