It's not like dealing with addiction as you can't give up eating, but addictive type behaviour is often involved, also reward /punishment cycles, as a coping mechanism during emotional disturbance, a malfunctioning leptin / ghrelin hormone system, as a defence against the need to relate to others ( fat equals loss of attractiveness so protection from interest from the opposite sex), side effects of medication, embedded habits from childhood, clean plate syndrome, food as a substitute for affection especially with a non demonstrative/affectionate parent, the list is so long and if it was just eat less, exercise more everyone would do it, but I know it just isn't that easy, having lost 4+ stone on multiple occasions, even after a year the habit of healthy living didn't embed when it normally takes around 9 weeks for a habit to become a fixed change.
I know the only permanent solution would be bariatric surgery but I guess I no longer want to take the risk although if it had been offered 20 years ago I would have said yes without thinking.