Which Songs by John are his "happiest's"?

Some can say is most of his early work on the band(ie, from Please Please Me to A Hard Day's Night) but even then, most of these love songs by John, had a little bit and hint of a sad/sorrow vibes or a bit of cynicism, dark tone, or hopelessness on those lyrics and I'm truly curious on which songs on The Beatles catalog by John, could be considered happy songs.