Struggled to find inspiration and livened the party up (15)

I believe the answer is:

hyperventilated

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'struggled to find inspiration' is the definition.
I can't tell whether this defines the answer.

'livened the party up' is the wordplay.
'up' indicates an anagram (letters get chucked up).
'livened'+'the'+'party'='livenedtheparty'
'livenedtheparty' is an anagram of 'HYPERVENTILATED'.

'and' is the link.

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I've seen this clue in The Times.

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