Look, there are two ways to approach this.

1) Physical source

The source could be physical, so you should go to an orthodontist to get a professional perspective. I've heard of people doing a minor surgery to solve the problem.

2) Emotional source

The source could also be emotional, as you mentioned. Then, you should seek professional help (from a therapist) to learn how to deal with the stress you are feeling. This could mean simply rewiring how you deal with stress, exercising more often or take medicine.

Sometimes, you simply need to pay attention to how physically tense you are due to work and try to relax your whole body.

I suffer from the bruxism as well and I got significantly better by going to therapy.