The same wall that keeps out your disappointment also keeps out the sunlight of enriching experiences. So let life touch you. The next touch could be the one that turns your life around.
A life best lived is a life by design. Not by accident, and not by just walking through the day careening from wall to wall and managing to survive. That's okay. But if you can start giving your life dimensions and design and color and objectives and purpose, the results can be staggering.