O que significa "I just want get by"?

A expressão "I Just want get by" é o nome de uma música. Eu gostaria de saber significado e exemplos de como aplicar esta expressão no mundo real.
Referência: http://www.amazon.com/I-Just-Want-Get-By/dp/B00G5T132O

Rich man wants my Gold, Poor man wants my time,
Preacher man wants my soul, teacher man wants my mind.
Jesus wants to stone me, Politicians want to lie,
Woman wants to own me, until the day I die,
I, I, just want to get by

Rich man wants to win, poor man wants his part,
One too many sins, weighing on their hearts,
No man wants to give, no man wants to try.
All men want to live, all men going to die.
I , I, just want to get by

(bridge)
Food in my belly, roof overhead, woman beside me, warm in my bed.
Little bit of dreaming, get me through the night, I, I, just want to get by

Rich man wants my gold, poor man wants my time.
Preacher man wants my soul, teacher man wants my mind.
I just want some meaning, want some reason why,
I just want a feeling, want some peace of mind.
I, I, just want to get by.

Obrigado.