I Couldn't Do This All the Time

As some of you know, I run a charity that helps fund a fabulous school in Ghana, West Africa. We are very small and have two fund-raisers per year. They always occur at the busiest time of the school calendar year just by chance. (OK, I organize them but I"m at the mercy of school and festive calendars.)
In May we have a sponsored walk which is getting bigger and bigger each year. It coincides with the end of the school year (early June) and the world's biggest garage/jumble sale, (week after) which I also co-chair. You'd think I'd learn wouldn't you?
This weekend we have a great fund-raiser for small kids, which involves me stuffing lots of sweeties into lots of goodies bags, bringing logo t-shirts and other stuff to sell, printing off sign-in sheets, and all manner of administration stuff. Very exciting and adrenalin rushing, but also not quite the thing one needs in the run-up to the Christmas break - the same week the Ball & Chain has just announced he will be in London. In London of all places. (If he so much as phones me while he's out wassailing with one of MY friends, I swear the divorce petition will hit him on his way back across the Atlantic.)
Anyway, - to my post title - ('cause I know you've been wondering if there's an end in sight). I can do this rushing-about stuff every now and then. I can do it even betterer when not distracted by a severe lack of Xmas-presents-purchased.
However, I'm not sure I could do it as a full time job, you know, like one of those personal assistants whose lives are constant fire-fighting.
Or maybe it's because I'm just too darn old now?