Hello fella, I'm on a similar journey if you excuse the lame journey phrase.
I've lost 38kg since September and just ordered some new shirts, I've lost 8" on the waist and 3" around the neck and gone from a 'comfort' shirt to a slim fitting from TM Lewin.
I pretty much started struggling to get off the couch, getting sloshed 3-4 times a week and even though my diet was pretty varied I binged when I drunk so a double whammy.
I've not monitored anything I eat, I have cut alcohol completely, gluten, wheat, anything processed and anything containing added sugars. I can't really overeat just meat and veg really
Today I had bacon, eggs, mushrooms and tomatoes for breakfast then a roast chicken lunch with plenty of veg followed by a spinach omelette tonight and a couple of medjool dates when I got in as I was flagging from an intensive 2hr boxing session last night followed by a 5am wake up call for a London meeting this morning.
Exercise and movement, I started walking a lot more, I stopped parking so close to my site / office and I dusted down my push bike, I started personal training crossfit and boxing / MMA and built from there. Now I can manage 25 - 30k on my bike in a couple of hours, an hour of PT boxing / strength where I cycle there and back and now just started 2 hours of intensive puking passing out boxing in a class on a Monday.
You know as we all do it's daunting but if as I did think about it that it took 30 odd years to put it on it won't all fall off in a few weeks.
Couple of things that helped
http://frankpersonaltraining.com/ for £5.99 a month access to a range of meal plans, shopping lists, home exercises and access to a Facebook group for inspirstion, support and general moaning.
Crossfit did help me to start especially as I did lots of PT sessions but it got very old and boring very quick and I ultimately have given myself a lifetime injury (shut it FT) that I now have to work around
I picked up a local PT with his own gym and the investment has been superb.
Once my fitness level got better I have started boxing in a group, it's hard hard work but the feeling after is great.
Stick at it fella and keep away from the pudding, pies chips and gravy