congratulations!
i think that you have two choices: set another weight goal, or set a different kind of goal. you could either work towards 190, or find something else to work towards - a certain amount of strength or endurance (injury pain permitting), or a certain measurement (x-inch waist).
it sounds like you've done a stellar job on your diet, too - it's definitely far more important to eat a balanced, healthy diet than to be a calorie nazi.