My dentist asked me if I was stressed at work. I said no. She said my teeth disagreed, and pointed at the wear patterns. I had been clenching my jaw all day without noticing, hard enough to grind my molars. Unlearning it took a few weeks, but the cues that helped me are simple.

Why you do not notice it

Clenching is an automatic stress response. Your jaw tightens, your shoulders rise, and your brain files it under normal. The first step is building a cue to catch it, because you cannot stop a habit you do not notice.

Cues that helped me

• Put a sticky note on your monitor that says jaw or teeth apart. I placed mine at eye level and it caught me dozens of times a day.
• Check your jaw every time you check your phone. Pair the habit with something you already do. Every notification became a jaw check for me.
• Set a loose reminder for every hour. When it goes off, unclench, drop your shoulders, and take one breath.

The physical trick is a relaxed mouth posture: lips together, teeth apart, tongue resting on the roof of your mouth. It feels strange for a week, then it becomes the new normal.

What else actually helped

I noticed I clench most during hard mental work, especially reading and replying to email. So I added micro breaks: every thirty minutes I look away, unclench, and roll my shoulders. It sounds like productivity nonsense, but a sixty second break every half hour did not cost me anything and my jaw stopped aching by 4pm.

At night I wear a cheap night guard from the pharmacy because I clench in my sleep too. The daytime clenching is the part you can catch, and catching it is mostly about reminders.

Three months later my dentist asked if something changed. My jaw finally felt like it belonged to me.