sticks and stones may break my bones, but words will never hurt me

a wild goose never laid a tame egg

Most things are inherited and predetermined.

bag of bones

A skinny, malnourished person or animal.

big break

A breakthrough, especially the first big hit of a previously unknown performer or performers in the entertainment industry.

break a leg

Good luck!; Do your best!; Said to someone wishing they perform well in a theatrical production or comparable endeavor.

break a sweat

To put effort into something.

break cover

To disclose one's real thoughts and intentions.

break down

To give in or give up: relent, concede, surrender.

break even

To neither gain nor lose money.