Re-starting from scratch

Well... after a good period of eight months in which I have studied, blogged, discussed and played well, making €15700 ( = $21000) including bonus, I seem to have suddenly turned into a bad player. In just six weeks I have wasted one third of my winnings. Bad luck, bad beats, tilt, poor discipline, massive multitabling, too high level and no more study are the main causes.
Now that my winnings have fallen down to just €10000 (including bonus), I feel as I have to re-start my poker business from scratch. Ten thousands euro, infact, is a key number for me because it has an enormous significance from a psychological point of view.
So, I want to forget everything happened till now. The 24th of April will be the starting date of a new era, for me, with a new mindset. I have charged €2000 and this will be my bankroll. I'll play just €20 turbo sngs (9 players). I'll play €30 sngs only if I'll need more FPPs to rescue a significative bonus. Playing 1% - 1.5% means a good bankroll management. I'll limit multitabling to 10x - 12x max because I need to stay focused on the table. I'll play more disciplinated. I'll study more. I'll stay indifferent against money and luck, trying to take only rational decisions.
Good luck to me in this renewed poker business.