I'm sorry you're feeling hopeless tonight.
You aren't alone. There are so many people out there like you/us. You're only 415 lbs. You can turn this ship around. If I'm feeling down, I watch a few episodes of My 600 lb Life on youtube. There are people there who have topped 700 lbs and were able to change their lives drastically. Listening to them, I hear myself. I've decided I don't want to be that person. You're worth the time and effort to take care of yourself. If you can find a support IRL, that will help you in addition to online.