Day 412 and I still catch myself saying "I am agree

That fossilized mistake cost me zero real conversations because the person always understood me. But tbh it bugged me so I spent one week drilling it — just saying "I agree" out loud 20 times before bed. Fixed now. Pick your 3-5 worst habits and kill them with reps, not with grammar books. If your listener gets it, the sentence already won. If the mistake keeps bothering you, fix it the same way you built the habit in the first place: say it right over and over until the wrong version sounds weird.