expression, godan verb (-ru)
break out of one's shell; make a fresh start; go beyond one's limits
Idiomatic expression meaning to overcome one's inhibitions, past self, or comfort zone and start anew. Often used for personal growth or a bold new beginning.
彼は新しい環境で殻を破り、積極的になった。
He broke out of his shell in the new environment and became proactive.
I want to break out of my shell and take on challenges without fear of failure.