reflective
nostalgically
remember
think back
lang syne
good old days
langsyne
old times
auld langsyne
reminisce
afterview
nostalgism
retrospect
remember like it was yesterday
reminiscent
nostalgize
nostophobia
dewy-eyed
look back
regression
reminiscingly
take back
recollectingly
nostalgiac
reminiscence
retrospection
time out of mind
nostalgist
flash back
back in the day
time immemorial
send back
recherche du temps perdu
anamnesis
flashback
went back
roll back the years
memento
souvenir
went past
cast one's mind back
retro-nostalgia
set one's watch back
nostalgic
for old times' sake
senior moment
regredience
got ahead of oneself
thought pattern
went astray