The scene after where Gervais' character realizes fully what he has done, especially to himself long term, is soul crushing. The i did the right thing, but for all of the right and wrong reasons look on his face is haunting. I think it is the 2nd episode.
A lot of the episodes open with him watching his wife telling him to enjoy life. Her sitting on the hospital bed, on her final days because of cancer.
I hated gervais before this, i found his comedy delivery and style very grating but after watching this shoe and getting kicked in the guts every couple episodes i gave him another shot and dont mind him so much now.
Show is a 10/10 if you want to sob silently with your partner.