Everybody misuses idiomatic expressions. I'm sure that I do it from time to time. But, I have a simple method for trying to keep it out of my writing. I just look it up. If I am not positively certain about a figure of speech, I don't use it until I know what it means and how to use it correctly.

Honestly, I don't care if every single other person in the world uses something incorrectly in exactly the same way. I understand that language evolves in cultures. I understand that "meaning" is really just standardizing popular consensus. But, there are times when everyone is still wrong, regardless.

Speaking of regardless, I hate when people use the term "irregardless." When I hear it, it feels like nails on a chalkboard. It's a negation of a negation, like some kind of logic puzzle.

The worst one is the phrase "I couldn't care less," which is used incorrectly by most American speakers of English about once daily. At some point in recent history, it became fashionable to drop the negative, and to just say "I could care less about it." Think about what you're saying. You speak English. You know what the words mean. I'm not going to bother explaining why you should start using the correct version. It's obvious.

Lastly, people are always "coming to . . . " something or other, but they're never sure of what. In a nutshell:
"Coming to blows" refers to fighting with your fists. "Coming to grips" is an archaic way of talking about wrestling with someone. And, "coming to terms" simply means reaching an agreement.

These last two are so poorly used that most people don't even know how to use them correctly. This is at least partially due to the fact that these phrases tend to be used almost exclusively metaphorically, and that type of usage can sometimes be difficult to evaluate and remember.

Maybe the worst part is that the metaphors in which these statements are used tend to be seriously flawed, stretched, mixed, or just broken. Here are some typical examples:

"Bob is having a hard time coming to terms with his divorce."
Well, really what does this mean? We're trying to say that Bob lacks perspective, or resolution, or that he is generally unhappy or unsatisfied, or unfulfilled. The only terms that he should be seeking are contractual, with his ex- and her lawyer.

"We're all going to have to come to grips with our fears." This is a correct, though highly metaphorical usage. While no one actually wrestles with a fear, it's easy to imagine how this works metaphorically. We use wrestling imagery all the time to represent difficult situations. We grapple with our pain and struggle against our addictions.

Try to avoid using "coming to terms" to express the idea that you have "gotten over" something, or "resigned yourself" to it. Try "accepting" it, or "moving on" from it."

Even if everyone else is using some phrase incorrectly, there is no reason you should.