sfondare bedeutet auf Englisch

break [broke, broken, breaking, breaks]▼(transitive: to do that which is forbidden by (something))
verb
[UK: breɪk] [US: ˈbreɪk]Let's break down the door! = Sfondiamo la porta!

make a name for oneself▼(to gain fame)
verb
[UK: ˈmeɪk ə ˈneɪm fɔː(r) wʌn.ˈself] [US: ˈmeɪk ə ˈneɪm ˈfɔːr wʌn.ˈself]

make it▼(to become famous and successful)
verb
[UK: ˈmeɪk ɪt] [US: ˈmeɪk ˈɪt]

preach to the choir▼(speaking to those who already believe)
verb
[UK: priːtʃ tuː ðə ˈkwaɪə(r)] [US: ˈpriːtʃ ˈtuː ðə ˈkwaɪər]