It is worthy goal! It is important to focus on making healthier choices and changes to your lifestyle. Even small changes can make a big difference. Subsituting foods you normally eat for something healthier, butter made with canola oil instead of straight butter; skim milk instead of whole or 2%. Whole wheat toast instead of white bread. Adding more vegetables and lean meats and fish. There are somethings that there is no substitute, like for me with bagels, so I allow myself a half instead of a whole one, and that is another thing, smaller portions.

I used to eat a lot of fast food/food-on-the-go and someone suggested to me to make my own meals ahead of time, put them in containers so they are ready to go to be heated or eaten immediately, and so I can take them to work with me. Also to have snacks on hand at work as well. Then there is no reason to grab on the on-the-go things. I can set a little bit of time aside one or two evenings a week after planning a trip to the grocery, and prepare meals for 2-3 days or a week at a time. It made a huge difference immediately in that I did not feel guilty, made a difference in my weight even in doing nothing else (also saved the pocket book), and then it was motivation to do more and to exercise. Advise starting this as well, even if it is just walking.

I initially had cravings for some of those foods, so I would allow myself one of those fast food meals once a week so I did not feel completely deprived. It helped to drink 1-2 glasses of water before any meal. Also, with the money saved, I set aside to spend on a special "treat" for when I hit certain goals, 25 lbs, 50 lbs, etc. or a friend did his "treat" when he hit his big goal, and went on a small trip.

Realistically though 1-2 lbs a week is healthy weight loss, with some higher and lower weeks depending. So don't set yourself up for failure by saying a 100 lbs in 2-3 months. It will take some time; it is worth it and you can do whatever you set your mind to; you'll get there! I wish you all the best. Good luck!