In fact, I have been reading quite a bit in addition to watching some videos on poker from Tournament Poker Edge. TPE is a great site dedicated to tournament players. I have tried other training sites, but the seem too focused on ring games. TPE is focused only on tournament play.
I have also investigated a personal coach. I have received coaching from Jared Tendler who is a mental coach. It was an incredible 4 sessions. We focused primarily on tilt issues. I would strongly recommend him if you feel your game is plateaued and has fallen flat.
I plan on posting a full review of my training sessions with him shortly.
Bottom line is that you can still learn and improve your game, by not sitting at the table!