Recently, I consolidated all my credit and rewards cards from two Slimline Filofax organizers--one main wallet and one backup for lesser-used cards--into one Personal. Actually, I had pictured fitting them all into one Compact, but I guess to Slimlines add up to one stuffed Personal. I was hoping to eliminate the problem of not having the right wallet with me when I needed it.
Well, it's turned into a failed experiment. The Personal isn't as convenient for carrying my pen and cash. Worse, it no longer fits into the wallet pockets of my various bags.
What was your biggest Filofax fail?
(Of course, since it's Friday, your other failures are welcome as well.)