The conversation between human and AI assistant.
[|Human|] Generate an analogy for the phrase "life is a rollercoaster."
[|AI|] Just as a roller coaster has its ups and downs, sudden turns, and moments of excitement and fear, life too is full of highs and lows, unexpected twists and turns, and a mix of emotions that make it unpredictable and exhilarating.
[|Human|] 
Generate an analogy for the phrase "life is a rollercoaster."