Looking to lose 80lbs+

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I'm 18 years old and I've been fluctuating with my weight almost all my life. These past 2 years it's gotten to the point where I am the heaviest Ive ever been and it's a shocker. I want to get back to at least a mobile weight where my bones don't hurt every time I'm standing for a prolonged time or try to be remotely active. I would really appreciate anyone who adds me and shows me support because I really need it. Losing weight has been hard for me because of eating disorder issues so it's a fight every step of the way. Thank you to anyone who adds!