Well...
My family isn't as hardcore about Disney as I am. I can't deal with PDD by planning...cause they're not so hot about going back so soon as I am.
BUT anyway...after working and living at WDW for four months, you can imagine the PDD. I usually look through my scrap-book, filled with a happiness theme (hey, its not always the happiest place on earth with crummy roomates.) I listen to music, namely a mix I made that has the music from Spectromagic, Spotlight on a Dream and Fantasy in the Sky, it totally takes me back.
Or I sift through my box of Disney stuff, odds and ends like the CM lanyard or glittery mouse ears headband, or maps of the parks.
Coming here helps alot too. :)