Well, might I suggest just postponing your trip. Right now isn't the best time to go away on a trip, but maybe in a couple months. I know after my dad died I needed to get away and did so a couple months after he died and it was one of the best trips I ever took, I just needed the break.

As for rigidity in plans, I have learned from a friend that posts here as well, that it's best to not plan every single detail on a trip. We took a trip to London in February, we knew what we wanted to do, we just didnt set a schedule and played it all by ear and I can honestly say that was about the best most relaxing trip Ive ever taken. I too am a "planner", well, reformed planner I might say so I know what you mean. We're off to Paris this November and although we know what we want to do, we just have no set schedules which is so nice.

Best of luck.