Meaning of the word "every tub must stand on its own bottom" in English

What does "every tub must stand on its own bottom" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

every tub must stand on its own bottom

US /ˈev.ri tʌb mʌst stænd ɑn ɪts oʊn ˈbɑː.t̬əm/
UK /ˈev.ri tʌb mʌst stænd ɒn ɪts əʊn ˈbɒt.əm/
"every tub must stand on its own bottom" picture

Idiom

each person must be self-reliant and manage their own affairs without depending on others

Example:
I won't help you with your debt; every tub must stand on its own bottom.
In this competitive industry, every tub must stand on its own bottom.