Enduring all of this and dealing with customers must be quite a challenge. Ok, lets take a deep breath and look at a few things.
It appears evident to me there is a few issues and quite different to each other. Medical and relationship issues that might be linked but for this exercise I'll separate them ok?
Your deep and prolonged sadness could be due to your marriage issues, what if they aren't? What if they are due to some psychological or psychiatric issue? like a mental illness issue? Briefly, I spent all my life up till 54yo (now 63) not realizing that I had (among other issues) - dysthymia, that caused my to be sad regularly. Crying for no real reason was common. So, we cant diagnose but as you can see a chance of diagnosis is crucial to your future, even if you are cleared of anything that will eliminate that concern. It certainly changed my life.
The second concern I have is your relationship. Men's make up is very different to women and we all have some difficulty coping with the opposite sex at times. Expression of care is often missing at crucial times when we need support and this accumulates over time- then the anger comes to the surface. I suggest you find a counselor through your GP or ringing Relationships Australia on 1300 364 277
Do you have a hobby, a sport, any other interest? Do you and your husband share any interests? Children?
Obviously counseling would benefit both of you but if he refuses, quite common, attend alone. You'll be amazed at how it benefits you. He might follow over time.
Beyondblue topic Forgiveness and forgetting – the two F’s for love
I hope you feel better soon.