Ah yes, image problems. I suffered with those for years, decades even... and I still have them today.
For example. I see myself as a plain jane. My fiance says that I'm beautiful. A girl I talked to in the pub said that she was jealous of how pretty I was. I said, "Me, pretty? I'm just plain." She just gaped, cuz she was seeing a different face to the one that I see when I look in the mirror. This girl was a stranger to me, so maybe she was telling the truth... it's just very difficult to believe it when I hear it, cuz I spent so many years thinking myself as fat and ugly. I've upgraded myself to "plain", but then I get people saying I'm wrong to say that, cuz I'm pretty.