you can't keep a good man down

you can't keep a good man/woman down

Someone with a strong will and determination is able to overcome any obstacle or challenge. They've tried to stop him by filing frivolous lawsuits, but he's beaten every one. You can't keep a good man down.
See also: down, good, keep, man, woman
Farlex Dictionary of Idioms.

you can't keep a good man down

or

you can't keep a good woman down

HUMOROUS
If you say that you can't keep a good man down or you can't keep a good woman down, you mean that if people have good qualities such as determination, they will recover from any difficulties and be successful. He'll come through — you'll see. You can't keep a good man down!
See also: down, good, keep, man
Collins COBUILD Idioms Dictionary, 3rd ed.

you can't keep a good man (or woman) down

a competent person will always recover well from setbacks or problems. informal
See also: down, good, keep, man
Farlex Partner Idioms Dictionary

you can’t keep a good man ˈdown

(saying) a person who is determined or wants something very much will succeed: He failed his driving test twice, but passed on the third try — you can’t keep a good man down!
See also: down, good, keep, man
Farlex Partner Idioms Dictionary
See also:
  • you can't keep a good man/woman down
  • get past (someone or something)
  • get between
  • get between (someone or something)
  • trifle with
  • trifle with (someone or something)
  • waste time
  • screw (one) around
  • screw around
  • hindrance