Why? Why am I eating myself to death?

I have been away from Spark People and that's probably why. I pack my cooler bag with stuff for breakfast and lunch, just to carry it home. How the heck do I do this? My clothes are all tight and uncomfortable and the scale, well, let's not go there. I need some SERIOUS suggestions. I have a lot of stress lately and even chewed off all my finger nails. Please give me at least one thing I should do to kick my arse in the right direction. Thank you to anyone who will listen for my cry. I don't want to be like this anymore. :(