Feeling apathetic before retirement: how do I stay motivated for 4.5 years?

I'm retiring in 4.5 years

I no longer trying to get promoted in work

And I find since I'm no longer pushing to get ahead, there's a sense of apathy.
I cycle to work. Go to gym at lunch. Cycle home.

But can I keep this up for 4.5 years?
Feeling apathetic before retirement: how do I stay motivated for 4.5 years?
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