If you are really serious about getting your body fit then it is time that you sat down and drafted out a serious plan that will allow you to accomplish your goals. By the way when I say "draft down" I literally mean that I want you to write it out. Getting your goals down on paper and posting them in a place that you can see them everyday is a proven method to psychologically keep in the necessary mindset to actually attain those goals.
Do not underestimate the effectiveness of goal setting in terms of how well it can help you get fit.
So on your goal setting sheet there are a few objectives I want you to think about. First I want you to set a weekly goal. This is a goal that you will have accomplished by the end of the week. It can be anything so long as it is related to getting you healthier. Personally I think you should keep the goals structured around exercise and cleaning up your diet.
So for the first weeks goal try something like committing yourself to going on an hour long walk at least 3 times by the end of the week and doing at least 3 sets of push ups everyday. For a food goal try something like committing yourself to phase out all refined sugars by the end of the week.
Whatever you choose make it something that you can actually attain. A goal that would be impossible to reach is not a goal at all. It is a pipe dream and that is not what we want.
Once you have a first week goal set then move on to a month long goal. This could involve keeping your diet clean, increasing your exercise by some capacity and hitting a weight loss goal of something like 5 to 10 pounds. Once again make sure that this goal is something that you really believe you can attain. You want to celebrate at the end of your first month, not feel deflated because you were not successful.
The next goal is going to be a 3 month long goal. This should be something pretty big like having lost 15 - 20 pounds. This should be a goal that really gets you pushing yourself hard to attain. I know that I keep saying to make your goals realistic, but do not make them so realistic that they are easy. They should not be easy. They should really require you to put in a lot of work and stretch yourself to achieve them. A goal that is easily attained is not much of a goal at all.
Finally you should also set yourself a big 6 month, 9 month and then 1 year goal. Obviously the 1 year goal should be the biggest one of them all. Make it something that does seem impossible. Make is something that takes you out of your comfort zone and requires an insane amount of work.
It will be that much sweeter when you complete it.