From 'having a beef' to 'being able to bear'
I didnt see anyone mention this in this subreddit. Are we aware of the fact that the original name of the restaurant while Mickey ran it was called The Beef was in direct reference to the traumatic family that they grew up in which everyone 'having a beef' with each other, yes, so much so that this was their 'normal'.
However, when Carmy taking over the business and successfully transforming it for the better is his testimony to his growing out of that chaotic mold, something for which he had 'to bear it all', aka, the trauma.