I can tell you that I have been overweight to some degree since I was a child. I understand completely that it is a very difficult thing. First thing I would say to you is, good for you for getting to the point where you know you need to make a lifestyle change, because that's exactly what it is. I have been doing it for a few years now, and it has been slow, but we didn't get this way overnight, ya know?! Start to try and cut out foods that are heavy in fat and carbs, like the bread. I am with you...I am a bread addict! But cutting it out completely would be foolish. Just to give you an example...I tried a fad diet several years back, one that I won't have to name, but one that had me eating so very little carbs and so much protein, that I had to pee on a stick to make sure my kidneys were ok. Long story short....I lost 50 lbs. but had to have my gallbladder removed six months later and gained 75% of it back. The point?...decrease that which is unhealthy, increase what is good and moderate. Include more whole grains, no processed flour. Drink alot of water, cut out soft drinks if you can, even the "diet" ones. It's all of the processed things in our body that can cause so many problems. I agree with what others have said about the fruit, if you have to get it in the can or a "fruit cup" get it with the juices, not the syrup, or rinse it after it comes out of the can/package, etc. A good rule of thumb, if you can tolerate it, is raw, raw, raw....raw veggies to snack on/fruit, etc. And always try to bake or grill, broil, anything but fry. Whew! ok, that's a mouthful...
Exercise....I get it. Very hard and even more difficult when you are already overweight or out of shape. Walking is always good to start, but can be hard and painful. I know it might not be the most feasible, but if you can find a way to do any type of water sport...swimming laps, water aerobics, etc., they are really the best for people who have injuries or are just getting started. Then, as you increase muscle tone and lose weight, you can graduate to riding a bike, brisk walking, maybe even running one day. Please remember that doing exercise on a regular basis, especially when you are not already an athlete or not already in the habit of doing it, is so very hard to get in the habit of. The theory behind 30 days of something is usually fairly accurate...if you can do something for the first month, daily, even in small amounts, you are more likely to continue with it. It will take time to increase time, intensity, difficulty level, but just because you aren't doing as much as the next person doesn't mean that it isn't effective for you at this point. It's all a building and learning process.
I know I have added a long answer, but I am also living this right now. Final thoughts....keep going, NO MATTER WHAT! if you have a bad day, "fall off the wagon", eat too much, don't get discouraged...learn from it and start new tomorrow. Also, I don't need to lecture or preach about how you get here by your choice and it's not "bad genes" or whatever others have said....you already know what you do and don't do. The good news is that any of this can change...we can be healthier, happier and more productive but it does take time and discipline. It is easy for people to get in the habit of going, going, going and eating fast and rushing around thru life and not paying closer attention to ourselves. Just be proud of yourself for what you have done and what you know you can do....Good luck!