I love to read and am often reading several books at once. Recently, I read a book I couldn't put down: Randy Pausch's Last Lecture. In the book he talks about brick walls and says "Brick walls are not there to keep you out. They are there to show you how badly you want something".
This struck me as very wise and as a wonderful way to approach life. We cannot control what life throws at us, but we can control the way we perceive it and react. In fact, I think the people who are the most successful and happiest probably approach life's challenges not as brick walls that stop them in their tracks, but as opportunties to see how badly they want something and how creative they can be in achieving their goal.
Ask yourself what brick walls you are facing right now. See if you are perceiving them as dead ends which stop you from moving forward or if they are there to show you how badly you want something.
How hard will you work to get over that brick wall and how creative can you be to find a way over it?