to 3FC! I remember feeling this way at my highest weight. I had told myself I would never reach 300 lbs, and there I was, a mere 4-5 lbs away from it. I was so upset: I felt disappointed, helpless, frustrated, overwhelmed by the weight, and absolutely exhausted from daily life tasks like walking and standing around. So, I hear ya. I'm sure others do, too. 
I know it seems overwhelming right now, but you are making a great first step in finding us and posting! And that's all you have to do--take one step at a time. You are going to find lots of support here! There are so many great threads to read and so many wonderful people who are happy to help you along the way. I know you may think you have to do everything at once, but you don't. If the thought of both diet and exercise seems too much, just pick one to start. I'd suggest diet, because diet has a greater influence on weight loss than exercise does, especially initially. (As the saying goes: Diet for weight loss, exercise for fitness). There are many types of diet plans you can try. Take a look at the threads under Diet Central for some great advice on them. Good luck on your journey! You can do this, one day, one step, one good decision at a time! 
Hey! Echoing the above posts, it seems really impossible right now I know, but you've made an absolutely wonderful first step in coming to 3FC! I have a Halloween challenge going on in the 100lb club (Just started today, actually) where some of us are going to spend the next two months getting on track and trying to hit our personal goals, of course supporting one another along the way! You're more than welcome to join if you'd like, you can find it here.

Sometimes the most long-lasting and effective wake-up calls are the ones that hurt the most. Just remember you are not isolated in your feelings of despair and frustration. Anytime you need to post or ask a question, this is THE place to do it I've found. Take care sweetie.
That helps a lot because I was considering buying a treadmill, but I use to own one and I hated it when it was time to exercise. Think I am going to try bike riding. It takes more time to lose as much weight but because it's more fun I could do it for longer periods of time.