I agree with many that are saying take some time and get away from the sport for awhile, but don't be surprised if you never get back the drive you once had.
When you start running there are lots of PRs/wins and then you get jacked in search of additional PRs and victories. Eventually you get a pretty good idea of how good you can be with as much effort as you're willing to put into it. That's often the beginning of the end unless there are financial incentives to keep you engaged.
It's ok to move on to other challenges. If you're like most you have been shaped by your experiences and they will always be a part of who you are. If they were great experiences, you might end up as a coach in an attempt to get others to experience the same. If they weren't such great experiences, put it behind you and move on to other things. Enjoy your life.