Pig - dont feel bad or ashamed, no point, it doesnt burn any calories 
You've identified the issue. Next step, deal with it but dont make a big deal of it. Identify the weight you want to be - e.g. "I want to weigh 10.7 stone, so I have to lose 21 lbs."
Try to be pragmatic and not emotional.
"To lose a pound, i need to be in a 3,500 kcal deficit, so thats 500 kcals less a day to lose a pound a week." (500 kcals as a result of less calories in and expended calories from exercise).
Dont do anything crazy like start a hugely complicated exercise regime that you'll never follow (unless you know you will) or cut any major food groups from your diet (I promise, I speak from experience).
Walk at least three times a week (briskly, no ambling) and eat slowly and drink lots of water.
That would be my advice, but naturally you dont have to take it. I've done a lot of diets /fasts/ lose weight quickly things and honestly - slow and steady wins the race.
Start tomorrow and in four months time you wont recognise yourself. Although four months sounds like ages, its already been four months since Christmas and thats flown by...
Good luck! All will be well 