In this video I'll break it down a bit. This lick starts with a sweep pattern going up CMaj7 (C - E - G - B), then down D7 (D - F# - A - C).
After tapping the D7, we descend down to CMaj again, setting up to then descend down the GMaj7 (G - B - D - F#).
After that, we resolve to Dmaj once again. Use my previous lessons on intervals or last month's "Chord/Scale" lesson for reference.