Ok, I've had a bit of a think and I chose the very last scene of the movie.
I picked it because of the song "Always Look On the Bright Side of Life."
I know this is going to sound corny, but that song saved my sanity during one of the worst times of my life a couple of years ago.
I would put "Monty Python Sings" on the record player and listen to Bright Side morning noon and night. Without fail it would put a smile on my dial and I'd be ready to face life again.