How to not misspeak

I could use some advice

I always make sure to tell the truth and never lie to people. However, when someone asks me a question I always end up misspeaking or misrepresenting information anyway, even though I never have the intention to do so.

What is causing me to do this?

For example:

If someone asks me “did you do your laundry” and I didn’t but for some reason I end up saying “yes”, or “did the doctor get back to you” and he did but for some reason I say the exact opposite which is “no”.

I don’t wake up deciding that I’m going to lie to people, but why do I end up doing it? It’s really messed up

It’s really bothering me and I don’t know how to overcome it. Could anyone help?

Thanks