Sometimes you hear things that seem agreeable till you actually think about them and realise they are utterly stupid. Sometimes, you find you had endorsed or agreed with those same idiotic things before you realised they were stupid, and so now you feel like an idiot. I suspect the best way to avoid that is probably to repeat them back to yourself in your own words, so you have to actually think about them. Here is an example I recently ran into.
Don’t ever change for someone just because you love them. Your significant other should accept your flaws.
If there was ever a good reason to make positive changes in who you are, doing so for someone you love seems the single best reason for that change. You love them. They have to put up with your issues more than anyone else. How is sparing them over-exposure to your worst behaviour a bad thing? What if you are an alcoholic wife beater? Is it ok to let your wife change you? What if I am a smoker and my wife would like me to quit? Wouldn’t that be a great reason to do so? I gain, she gains,(assuming my presence is actually good for her that is). Change isn’t easy, but refusing to do so just because someone you love wants you to is just stupid. They should not expect you to be flawless, but that is no excuse for you or me not to make an effort toward self-improvement.