Be thankful for brick walls...

Sometimes when you work tirelessly and at the end of the day you do not have much to show for it - besides a bit more character and growth with your interpersonal skills - it can be hard to keep up the vigor and carry on. BUT...this may help you place things into perspective. 

"Brick walls are there for a reason. The brick walls are not there to keep us out. The brick walls are there to show how badly we want something...because the brick walls are there to stop the people who don't want something badly enough. They are there to keep out the other people."        - Randy Pausch