FREAKING ADDICTED TO GAMES??!!! :( HEEELP?

I LOST DAYS FROM SCHOOL JUST TO PLAY GAMES, I USE REAL MONEY THERE AND THAT COSTED TO MY FAMILY MORE THAN 500$ ESPECIALLY THE ONLINE ONE CALLED AMEBA PICO. I FEEL REALLY BAD BUT I CANT STOP PLAYING AND PURCHASING MONEY. :( I TRIED TO STOP OR PLAY LESS TIME BUT THE RESULT WAS HORRIBLE. WHAT SHOULD I DO?