I assume you refer to the weight loss?
I'll try keep a long story short.
Sedentary life style, loved food too much, enjoyed social drinking. Have been 140kg or so for years. 1.86m tall, in my early 40's now. When my 1st child was born, I held her in my arms for the first time and promised her I'd not be the fat lazy Dad etc. Nothing changed. My 2nd was born, I told him the same thing. Nothing changed. She turned 5 this Christmas and he's 1yr 5m now.
Basically a few things in a row finally helped my brain flick the switch. It was for me, not my kids, not my wife, but for me. For me to be healthy, for me to live as long as possible to enjoy my wife and kids and to enjoy life to the fullest.
Every 12 week challenge I ever did had a finite goal. At the end of the 12 weeks, after all the blood, sweat and tears were done, the goal was over and I needed a break, needed to reward myself. Always went straight back to where I was. Those crash course challenges were not sustainable for me.
One Sunday afternoon in August, having a lazy beer and braai day at home with mates. Got told about a friend of a friend who sounded just like me, weight and activity wise. He'd lost 40kg's in 9 months. I was interested. I listened to the details of what he did and the day went on.
I must have soaked it all in. I woke up the next morning and started making a fairly healthy breakfast. My wife asked me what I was doing. I said I think I'm going to try eating a bit better.
That was 27 August.
I didn't stop. So, what I changed was. What I eat (I eat normal meals/food including potato, pasta, a pizza once a week etc) and portion control (not simply filling my plate like a madman but a reasonable portion). I cut out bread, sugar, take outs and alcohol. I realised it's simply all about calories. If I want to lose weight, less in than what is being burned. For the first week I was fairly hungry as my portion sizes decreased, but after that my body adjusted and now my portions are completely satisfying.
I am not obsessed about my weight, I did and still only weight myself every 2 weeks. Last time I weighed myself (day after coming back from a 3 week holiday away) I was 117.5kg. I even lost 1.8kg over my 3 week holiday.
For the first 6 weeks, I changed zero with respect to exercise. I had lost 8kg's or so by simply stopping eating like a teenager. I started feeling better, sleeping better, had tons more energy and naturally began feeling like doing some exercise.
I joined a friend for a parkrun. I walked/jogged that 1st one and got a time of 49m40s/5km.
I kept at it most Saturday and really started enjoying it. I now run 5km three times a week and am averaging 34m/5km.
This is my weight chart since starting (attached). The little bump upwards (between September and October) is an error in the stats when I moved over from tracking my data on Fitbit and moved to a Garmin device.
Back from holiday on Saturday after eating a lot of rubbish and back to normal on Sunday morning, good, wholesome food of reasonable portions. I did not stop my runs while on holiday.
That's my story so far. My goal weight is somewhere in the 90's. Not totally fussed until I get there and see what's good for me.
Important part for me is that it's totally sustainable, easy and I'm still loving the food.