I know you're feeling better now, but I decided to write this anyway. Maybe because I talk too much.
Please don't take this the wrong way, as it has nothing to do with your gender, but your story reminds me a little of my boyfriend.
He's older than me by a good margin. He works a lot and lives a high-pressure lifestyle. The financial well-being of many people sits on his shoulders, and these are people he knows personally and has talked to, so he can't merely abstract them as numbers. Some are everyday people. Some are people running the fifty year family business. His biggest client grosses tens of millions per year. He makes good money, and he enjoys his life a lot at times. He goes on frequent vacations around the world, usually at least one per year, and he also frequently travels to visit family during the holidays. He loves new experiences, new flavors, new textures. Oh, and the people person thing. I guess I fill the niche of the quiet intellectual in our relationship, but he can be anybody's friend in thirty seconds, no problem.
Only reason I'm bringing this up is because sometimes he feels the same way as you. I've sat on his lap and looked into his eyes and seen something very similar to what you mentioned in your OP. Not the double life part, but the feeling of profound, innate frustration, even when many things seem to be going well, of not seeing the point of things and not having any good idea of what's happening next.
I don't have a magic window into your head. Maybe I'm totally wrong. But I think you should consider that some significant part of these feelings may be the pressure of your lifestyle in tandem with your gender identity, not just one or the other working alone at different times.