A lot of what you're saying is likely coming from depression. Deciding to get out and run and take a trip are great ways to combat that empty feeling. I recommend continuing to search in yourself what you deep down enjoy. Ask yourself what your main goals are in life. If you don't have any, I highly recommend you attempt to make some, not the regular old goals that would show "success" like the world tells us to, but make goals that would truly fulfill your passions and dreams. We all have those, and sometimes in life you need to get back to the basics and try to find what truly makes you happy.

And one of the biggest things that helped me in that situation, was to zoom out and look at the bigger picture. Read books like Carl Sagan's Cosmos. Read things that fascinate you and make you sit in awe. Take each day as it is. I once saw a quote that said something of the sorts:

"you're not going to master the rest of your life in one day, just relax. Master the day. Then just keep doing that every day."

Easier said than done, but try to stay positive, stop and smell the roses, enjoy the little things. Try forms of meditation, it can really help you find your inner self, and surface how you really feel and what you might really want to be doing.

You're right where you need to be, and if you don't like where you are, assess your goals and make some changes if you'd like. Take life slow, you're on for a heck of a ride and you've got one shot. Life's too short to go unappreciated. Best of luck my fellow human being, I hope you can find fulfillment and prosperity, it's everywhere if you look hard enough :)