Yeah, it's a good place to start. And realize that the 'stress' you are feeling from your job is raising the Cortisol levels in your body, which deminish the Oxcytocin and seretonin in your system... the 'feel good,' chemicals... which in turn make you grabby and needy... which in turn, drive Mrs. GGB away.
Your system is out of whack. Balance. Understand you won't find it over night... let yourself off the hook a little, or all you will do is exaserbate your stress levels.
Work out? Take a run? MAKE time to take care of yourself, to keep yourself in balance. Otherwise, you (the collective you) will tend to take out your frustrations on the world.