keep body and soul together
US /kiːp ˈbɑːdi ənd soʊl təˈɡeðər/
UK /kiːp ˈbɑːdi ənd soʊl təˈɡeðər/

1.
to earn just enough money to live and survive
:
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After losing his job, he struggled to keep body and soul together.
•
Many people in the city are working multiple jobs just to keep body and soul together.