@Ziggly
I haven't gotten through the whole thread yet (page 13), but I'll offer my opinion from what I've gathered so far. I say all this being a type A, sensitive, hard-working, underdog, prove-the-world-wrong personality like yourself.
I don't think you've fallen out of love with her. I think that right now you are very angry and resentful and I don't think you've effectively communicated with her about your feelings. This is not something you divorce your wife and friend of 12 years over. The ether will burn harshly when you walk away and realize you walked away from the most loyal friend in your life. She may not always agree with your decisions but damn, the woman was still there. So while you may feel angry that she didn't respond to your dreams and passions in a way that you would like, she has the right to her opinion just as you have the right to yours. She may have questioned your decision, and done it in a way that wasn't exactly smooth, but in the end she stayed by your side. And she said she was proud, which you can look at as her maybe finally realizing the kind of amazingly hard worker you are. Maybe she wasn't all in with you at first, but she is now--you gotta appreciate that. What you did in six months is RARE, so you can't fault her for not believing that you fit into the 1% that can actually achieve on that level. The world has taught her differently and that is the lens she is operating through--she is actually being realistic. Yeah, you're different, but sometimes you gotta show people that first before they believe it. Can't hate them for that.
And I can understand why you may feel resentful that she didn't notice your drive before, but she does now. Don't hold that against her. You two need to communicate and you have to be real with each other. It's okay to have your feelings hurt man and to be a sensitive person, but you gotta be able to communicate with your wife how you feel when she upsets you and also be able to step back and see that she didn't intend to make you feel that way, she just doesn't know how to relate her concerns over your career decisions in a smoother way.
This marriage isn't over. You're not out of love with her. You're angry, which is blunting the real feelings that are still there, that you still have for her. You may be angry and resentful, but you still love her breh--just you being hurt and angry doesn't allow yourself to feel the tingles right now, the oxytocin.
Real love doesn't die that fast. Talk to her calmly about how what she said made you feel, and work it out.
That's your friend of TWELVE YEARS who has seen you go through ups and downs and stayed with you no matter what. That's REAL support, no matter how you wanna slice it. You won't find many people like that in your life. Please take this advice from a breh who left a terrific woman because I wasn't able to understand my feelings and communicate them. I've regretted that decision for over three years and think about it literally everyday.
Don't leave her, work it out.
How many threads or thread derailments have happened because brehs shyt on marriage? Then when a dude is like fukk it, this ain't for me you want to shyt on him for it? Sometimes I just don't understand you all. I know for a fact the women on here would be "Go girl!" if a woman decided to leave her man for not supporting a career decision. "Girl, he don't need you if he can't respect your hustle."
and the wife decides to leave ten years later dude is gonna lose half. Not to mention the time lost. 
yall niccas aint shyt
I didn't read the part about how she was with you for 12 years