Since I started telecommuting a couple years ago I've gotten more in touch with the effect that being outdoors has on my mental state. If I'm feeling depressed or stagnant and confused about my current set of problems or choices then more and more I've learned - go outdoors. It immediately changes my whole outlook. There's something about the open environment and the big world with its Sun and wind that softens personal problems and makes it seem like there's a world of possibilities waiting to be explored. Staying inside is a downward spiral.
Scientific benefits of spending time in nature - Business Insider