Yo-yo game ceases to worry; win or lose, I don't mind (4,4,4,2)
I believe the answer is:
easy come easy go
'win or lose i don't mind' is the definition.
(phrase said to show one is relaxed about a defeat)
'yo-yo game ceases to worry' is the wordplay.
'to worry' is an anagram indicator.
'yo'+'yo'+'game'+'ceases'='yoyogameceases'
'yoyogameceases' is an anagram of 'EASY COME EASY GO'.
(Other definitions for easy come easy go that I've seen before include "Nineteen sixty seven film with Elvis Presley" , "Like a rich spendthrift's salary" , "What cost no effort to get won't be missed" .)