Meaning of the word "if opportunity doesn't knock, build a door" in English

What does "if opportunity doesn't knock, build a door" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

if opportunity doesn't knock, build a door

US /ɪf ˌɑː.pɚˈtuː.nə.t̬i ˈdʌz.ənt nɑːk bɪld ə dɔːr/
UK /ɪf ˌɒp.əˈtjuː.nə.ti ˈdʌz.ənt nɒk bɪld ə dɔː/
"if opportunity doesn't knock, build a door" picture

Idiom

if you are not presented with a favorable chance, you should create one yourself through initiative and hard work

Example:
I couldn't find a job in my field, so I started my own business; if opportunity doesn't knock, build a door.
Stop waiting for someone to discover your talent and remember: if opportunity doesn't knock, build a door.