YOU SAID:

it's better to regret something you did do than something you didn't do

INTO JAPANESE

やらなかったことよりもやったことを後悔したほうがいい

BACK INTO ENGLISH

You should regret what you did rather than what you didn't do

INTO JAPANESE

あなたはあなたがしなかったことよりもあなたがしたことを後悔するべきです

BACK INTO ENGLISH

You should regret what you did more than what you didn't

INTO JAPANESE

あなたはあなたがしなかったことよりもあなたがしたことを後悔するべきです

BACK INTO ENGLISH

You should regret what you did more than what you didn't