I just try and prepare sentences in my head so I don't get messed up. One Cluttering thing i do when speaking is I will sometimes just revise the sentence I am speaking because the next word I was going to say was coming out wrong as I am speaking. This will just make me change what I plan to say and I will try and adapt the conversation on the go. It's when I begin to clutter more and more as I get farther away from the sentences I originally planned in my head.

I should also state it can affects your handwriting too. If it looks sloppy even though you try then that is also a symptom of Cluttering. The same issues with words not spoken right can happen when you write/type too. All my notes during school were horrid looking from this. I cant even state how much I had to rewrite this comment lol. Hope everything can make sense to you!

If you do have this then I am sorry for whenever somebody told you to slow down speaking.