roll with the punches
to adjust to difficult events as they happen
roll with it
She had to perform shortly after her brother died, but she rolled with the punches and put on a great show.
Etymology: based on boxing, from the literal meaning roll with the punches (step back or to one side as you are being hit), so that you do not receive the full force of the attack
Sounds like a synonym of
you gotta play the hand you're dealt posted by Raiden last month.
But you're looking for an adjectival qualifier, right?
I like Nick's ευπροσάρμοστος. But it really depends on the exact context.
e.g.
a roll-with-the-punches attitude
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