1. Backpacking for a 1 week time period or longer. Living out of a backpack is a great way to help rest your brain terms of its standard perspective on what it thinks it needs to be happy in day to day life. Also, there are some nice places you can walk to with a backpack on that you can not drive to.
2. A Therapeutic mushroom trip - read how to change your mind by that hippy Berkley professor. This is not for everyone though. So proceed with caution.