stop over eating

I am addicted to being unhealthy and stuffing as much as I can into my little stomach until I pass out. I did this every day for years and I cannot break out of this cycle. I ate a banana for breakfast and a bowl of cereal. For lunch I made a low fat ham sandwich with veggies on it and some grapes. I drank four cups of tea and 10 cups of water already so obviously I’m trying to lose some weight.. But I cannot stop over eating. It is approaching 4 p.m. and that is about when I start snacking mindlessly and I lose all self control. It makes me hate myself, but when I don’t over-eat I think I am going to lose my mind. I need to focus… I want to eat so bad right now but I keep repeating self control, self control. I need to take my mind off food. I keep smoking cigarettes and I hate doing that too. Plus I smoke pot and I have the munchies all day long. I’m losing my mind, I need to stop thinking about food all the time, it is driving me insane!!!