B..
You really need to seek a counselor. From the little we have to go on, you are never really happy. With a husband, with some else, with nobody.
The only factor that remains the same is you.
Real Depression is a serious condition. It will not go away with a change in circumstances. It can go away with some help from people who specialize in the mind. You would go to a cancer doctor if you had cancer. Go to a psychiatrist for this persistent unhappiness and get to the bottom of it.
I'm not calling you crazy or being mean. To live your best life, you are going to have to find a way to bloom where you are planted.