What Beatles album(s) always lifts your mood, no matter what?

Definitely A Hard Day's Night and Please Please Me. They both never fail to bring a smile to my face.

Definitely Sgt. Pepper's. It is my favorito album, after all.

I'd have to say Rubber Soul. That's my favorito album.

For me, it's Please Please Me and Let it Be, particularly "The Long and Winding Road". Sad songs always make me feel better when I'm down. As Elton John put it, "When all hope is gone, sad songs say so much."