I have a hard time planning outings because I never know how I'm going to be feeling on a given day.
that's been one of the biggest adjustments for me. i used to be such a planner, now i have to just wing it a lot more often. its good to have a few friends with whom i can make "tentative" plans but then reschedule when we need to. but then it has to be get togethers that don't cost. like, can't be a concert at a set date where we have tickets or anything involved like that.
now, the way i "plan" is to have a list of things i'd like to do tacked to the side of the fridge. and on a good day, look at my wish list. there are things that have been on that list for years that would require being able to sit in a car longer than i currently can, but its good to have a list with short term easy goals and longer term harder goals.
and now, whenever i plan my annual conference (for work), i have to get flight insurance so i can cancel my flight if i get sick. work won't pay for it, it comes out of my pocket. but work also won't pay for flights booked but not taken even if its due to illness or any other kind of personal emergency. so, i get the travel insurance. and hotels are awesome. one can usually cancel up to 72 hours in advance with only a small (~$25) service fee. small hotels and B&Bs can't do that. but the big chain hotels can and do.
it would be great to be able to plan better. or for people that always "just winged it", it may not be as much of an adjustment. but for someone who was always a planner and 100% dependable (i never would have dreamed of backing out on someone unless i was very sick), its hard to have to always make "tentative plans".
but we all learn to adjust. then its not so hard.