Mainstream bipolar (formerly manic depressive) speaks about "periods of depression and periods of elevated mood"; a waveform has top and bottom; many shamanistic traditions have conceptualized 'above' and 'below' worlds in various forms; drama is based on 'tension' and 'release'; etc.

Often people get first drunk and then hangover; cf psychosis. In shamanistic work you usually first take deep dip in the subconsciouss "below" of fears and trauma etc., and then go to the "elevated mood" aka good vibes. :)