is this a good way to loose weight? :s?

i've been drinking almost 2 litres of water a day.
taking a womans multi-vitamin (from GNC)
and also Accelis, the weight loss supplement, but its not a strong one, its more like just a boost.
as well as drinking one cup of green tea daily
and doing light exercising (a few crunches, stretches, dancing, walking everywhere instead of driving)
i eat mostly granola, oats, (like cheerios, mini wheats, nutrigrain, nature valley, once a week subway) but i've always eaten like that anyway.. its just what i prefer. its cleaner to me then big greasy burgers... which by the way i cut out completly..

it seems to be having an effect, but is this healthy enough?
how might i add to it so that it could be healthier, or more effective?

im 18, 5'7, 135 pounds now. my BMI is average, but i gained some weight i wanted to loose... roughy 10 pounds.
well i dont wannt go strictly health food, carrots and apples, im just wondering if what im eating is ENOUGH, in terms of ENERGY and my general well-being .. i know theres healthyier things out there (duh).
ooohh okay im getting it now ...
like im in university, so i eat healtier than most people here lol thats all i know, but i get what your saying ..

which diet pill works the best? i used metabolife before they removed the ephedra and I lost about 50 lbs in about 3 months, now they arent much more than a multi vitamin!