30 lbs is about 105000 calories needed to be burned in excess... so thats 1750 calories each and every day youd need to burn... calories burned while walking depends on gender and weight... but really... theres no way on this earth you will lose that much weight with no other changes than a mile walk (about 15-20 minutes of exercise)... most tables that list walking and calories burned per HOUR of work puts calories burned less than 400, but lets be generous...
if you assumed 400 cal/hr that would mean youd need to walk more than 4 hours a day, every day...
a mile a day walked, alone, will not get you that much weight that fast.
that said... a mile a day is a good start to getting you moving if you havent been exercising. then push it out to two miles and then beyond... but youd need a little time for your body to get used to the workout.
in the meantime, address your diet. when are you eating? what are you eating? portions?
a combination of reasonable, sustainable changes in diet coupled with regular, daily exercise (preferably different kinds of exercise, cross training) can get you on your way.
would it not be worth it if you only lost 10-15 lbs in that time? youd be two months into an exercise plan, your body would be primed to keep things moving, and i think thats a great reason to start the journey now.
a friend who has struggled with weight for a number of years (24 years old) has had great success using weight watchers and exercise. she looks fantastic.
studies have shown that those who use journals to document their workouts and their diets on a daily basis lost twice the weight of others... its that discipline thing... keeping yourself on a schedule and honest.
so... not knocking the one mile walk for starters, but a 15-20 min walk just doesnt make the needed caloric burn for this kind of weight loss.
mix it up. have you jumped rope lately? it is killer. a great calorie burner. low cost equipment. you can do it in your own home. seriously try to do that for 5 minutes straight. its evil.
so theres a lot to do and consider. i think its great to consider shedding excess pounds. the way to get there is to be deliberate about it... having a diverse exercise plan that keeps your body confused and gives time for proper healing, while addressing your diet and making useful, sustainable changes that will help you lose and keep the weight off.
like Altenwe said, the weight didn't come over night and it won't leave over night! 30 lbs in 2 months is a lot for an average person. Fighters use different methods to do so by colanics, sweat bags, perfect nutritional diet, but for an average human being without any training this is not recomended and to be honest, I wouldn't try it.
All I can say is 30 lbs is a long shot, lose what you can though if you can only lose 15 thats still something! Don't let these posts brings you down or steer you in wrong directions. Consult a physician/nutritionist
you know what just give it your best shot just dont dissappoint your self but i believe you can loose weight just keep your mind off of it and i suggest getting the wii fit cause its awesome and good for you lol good luck