Your better than me. I'm surprised that you still separate chess into compartments.
I'm guessing your going to want to see why you lose and focus on correcting that.
worth noting is also your personal development appart from chess, if you dont currently exercise that is worth rating points, eating right is worth a lot on an improvement scale as well.
Im going to throw in trying the most common opening that you never play, not looking it up, but playing it and seeing what positions you casn get that are new to you.
After a little more than a year of serious studying, I've seem to hit a wall of improving.
I've done plenty of tactics, and my tactic's blade is sharp enough.
I know my openings(at least the ones I'll play at tournament level)decently, and I am in the process of increasing my opening knowledge.
My endgame is decent at this point, as I'm going through Silman's Endgame Course, it's improving.
My middle game is the best it's been in a while.
Now the question is, what's next?
Do I study openings deeper? Middlegame? Endgame? Before this, my path to improving has seemed straight forward, but now I'm not so sure.