Best memory - Just the (relative) freedom of daily life as a kid. Get up, go to school, have a laugh with friends for 8 hours, come home, get changed, eat dinner and then head straight out to play football. Sleepovers every weekend, staying up all night playing the ps2/gamecube and eating junk. It's a shame we don't value it more at that age.
Worst memory - An unoriginal one, but receiving the news that my grandfather had passed. He was the first family member I remember losing and we were very close. My dad has never much been into football so I'd go to games with my grandad.