The melody of I Believe In Happy Endings by Neil Diamond runs 167 notes across 46 bars, 3:07 long in Eb at 90 beats per minute. The tab sits almost entirely in the first two frets, one note at a time — no chords to barre and no strumming pattern to keep up with. A piano backing track plays the chords and bass underneath, so the line you are learning sounds like the record even at half speed.
Prefer to strum and sing it instead? I Believe In Happy Endings chords and lyrics.