I’m really sorry to hear about what you’re going through. Unfortunately I don’t have much great advice for you seeing how I’m in the same situation. I also recently had to take a leave of absence after having a breakdown and am still unsure of what to do with myself. I’ve also tried applying the same exact practices; meditation, learning more about Buddhism, being present, exercise, yoga and eating healthy…and still-Nothing! It’s getting quite discouraging. One thing that is very fortunate for you is that you make very good money. Not that money means everything but you could use this to your advantage if you need to just take a vacation and find yourself. Maybe it could help you discover if it’s truly your job that’s making you unhappy or if it’s another aspect of your life that is affecting your work. It could even just be time for a change from your workplace environment. I truly hope you find what you’re looking for.