Verb
keep it together (third-person singular simple present keeps it together, present participle keeping it together, simple past and past participle kept it together)
(informal) To maintain composure; to avoid an overly emotional reaction; to suppress an instinct or urge.
In the day I can smile though I wanna die / Hold on, hold on / I can keep it together for a little while / and be strong, so strong / But when the sun goes down and I'm all alone / I haven't the strength to fight / That's when my tears give in to the night. Kim Wilde
It's political glue inside Europe to keep it together - the euro is the best thing going for it since the creation of the common market. Robert Mundell