JesperU: I have a question. I weight in on about 70 kg and I'm quite short for my length due to birth defect in my spine.
So yeah, I'm overweight. Or rather obese.
Anyway, on to my question. I seem to have problems sleeping lying down. It appears that i can only sleep while sitting up, leaning against a wall. The problem with this is I get some serious pains in my neck, shoulders and upper back in the morning. Do this have something to do with my weight, that I can't sleep lying down?
Absolutely visit the doctor if you were born short due to spinal issues and are now possibly having problems sleeping because of it. That should have been the first thought on your mind.
Considering your length you're definitely at a point where you should lose some weight. Assuming you're able I'd get some light exercise daily (if your lifestyle is otherwise sedentary), but more importantly, eat less. Make sure you're eating less than your maintenance requires every day and you'll lose weight over time.
I've just worked myself back down from 115kg to 80kg in the last 2 years which is now a kg or 2 below my ideal weight but I'm still below average on muscle mass (had a few bad years before that where I gained a ton of weight).
The last 20kg was done solely by making sure I ate less than 1800kc a day (my maintenance was ~2200/2300). Add some multivitamins for what you'll lack on a daily basis, drink 2 liters of water/liquids a day. Throw in a day every now and then where you eat at maintenance level to both keep your sanity and to keep your body used to burning food. Initially I did some light cardio on my hometrainer 30-40 mins a day but nothing heavy. (these calculations are for a 1m83cm male, if you're female or shorter like you are your maintenance will be lower and so will your target)
Edit: Oops, had 4 liters of water there at first. Probably because I used to prepare 4 half a liter bottles in the morning so I knew how much I had left to go during the day :)