Fat & Broke! The connection between overspending and overeating?

So I sit here writing this as a formerly skinny person. I was skinny for the first 25 years of my life. And then I stated to gain, and looking back I now realize I was gaining more than weight. This is also the time in my life when I slowly started gaining debt as well. According to recent studies overeating and overspending are related. Both being components of OCD. I have been very unhappy with the weight gain, as it seems like I am no longer who I thought I was, I look in the mirror and don't even recognize the face looking back at me. The debt has now defined me, and I hate that. I feel that people that know look at me differently then before. Like I am less of a person, and the body weight doesn't help. As a former skinny person, I can tell you that people treat me entirely differently now. Not sure what is worse, the negative attention or the total lack of attention ( I have become the invisible lady when shopping). So what was the trigger that changed my life? I am not sure the only event of significance that I can come up with was a traumatic breakup which left me in a spiral of depression for a long time. I eventually seemed to rise up from the depression, but now I wonder what lingering mental issues were left behind, and what do I do now. I do not like what I have become, and want my old self back....I don't want to be fat and broke!