Quote: I have a strong feeling if you or your H decide to actually separate that you will do just fine, maybe even thrive. Do you think you can do that within your M too?
That is the question, isn't it? I suppose the more differentiated I was the more I'd be inclined to answer "Yes". I think the answer really should always be "Yes" for anyone. I mean unless someone puts you in actual physical danger, you should be able to express/assert yourself to the extent that you can thrive in any relationship or even any situation. However, your struggle to grow and thrive almost certainly will effect the situation or relationship, sometimes to the point of extinction. For instance, a person can't thrive in a concentration camp but the extent to which your marriage resembles a prison is thoroughly a matter of your own perception- the guards have no guns- you are free to leave or do as you please within the compound.
"Tell me, what is it you plan to do with your one wild and precious life?" - Mary Oliver