This is how I went from about 195 to 165, which is where I'm at now.
I did NOT join a gym, although that does help.
Every day, I did some sort of exercise. On one day, I'd do push ups. This might sound a little strenuous, but what I'd do is 3 sets of 20 push ups. Most of the time, when I started, I wasn't able to finish the second set.
The next day, I'd run in place for about 30 minutes while listening to some music that pumped me up.
The day after that, I'd do 3 sets of 50 sit ups...remember, it's not important to finish, just to reach the level where you can't take it anymore.
I'd rest the next day and then start the exact same routine for the next 3 days again.
As for the diet, you don't have to change the way you eat much. Try to cut the portions you do eat by at least 1/3rd and limit your condiments. For example, mayo is PURE fat and if you can cut things like that out, you'll do better.
Dames