I wouldn't do it
No lo haría ni por todo el dinero en el mundo.
I wouldn’t do it for all the money in the world.
Prometió que no lo haría otra vez.
He promised he wouldn't do it again.
No lo haría ni por todo el té en China.
I wouldn’t do it for all the tea in China.
If I were you, I wouldn't do it.
I decided I wouldn’t do it.
Me conoces lo suficientemente bien para saber que yo no lo haría.
You know me well enough to know I wouldn’t do that.