ups and downs

volatility

Rapid, unpredictable changeability

• oscillationsRepeated back-and-forth motions
• cyclesRecurring sequences of events
• swingsRhythmic back-and-forth movements

instability · turbulence · ebb and flow · vicissitudes · undulations · waves · peaks and valleys · variations · irregularity · inconstancy

rollercoaster

Looping amusement track vehicle

• twists and turnsFrequent direction changes
• turbulentViolently agitated or disturbed
• stormyMarked by violent weather

rocky path · smooth sailing · rough patch · highs · lows · chapter · phase · stage · milestone · obstacle

triumph

Resounding, celebrated victory

• defeatVictory over another
• victoryDefeating an opponent
• lossBeing without something

achievement · setback · breakthrough · collapse · prosperity · adversity · accomplishment · disappointment · downfall · success

mood swings

Abrupt temperament changes

• joyIntense positive emotion
• sorrowDeep emotional distress
• elationIntense triumphant joy

depression · hope · despair · enthusiasm · apathy · contentment · grief · optimism · pessimism · bliss

• mood swingsmood swing, fluctuations, volatility, instability, moodiness
• fluctuationsfluctuations, oscillations, variations, swings, waves
• emotional volatilitymood swings, lability, volatility, dysregulation, highs and lows
• natural rhythmstides, waves, high tide, low tide, cycles
• pairspair, pairs, two, duo, duos
• terrain featuresmountains, hills, canyons, ridges, cliffs