come out of your shell

US /kʌm aʊt əv jʊər ʃɛl/
UK /kʌm aʊt əv jʊər ʃɛl/
"come out of your shell" picture
1.

to become less shy and more sociable

:
After a few weeks at college, she really started to come out of her shell.
It took him a while to come out of his shell and make new friends.