Something you'll require to bear in mind about a trip is that the experience lives within the journey, the destination is simply your stopping point.
As such, think of what you desire to do and where you desire to spend your time. And this can in fact consist of lots of destinations if you have adequate time.
For instance, if you're the "beach bum" type, taking a seaside roadway trip will be a terrific experience for you. Or if you 'd rather sink far from the world, heading into remote mountain regions might be the ideal trip.