Here’s my take from my experience over the last year, where I have lost 21kg. I’m not an expert on diet or exercise, or anything like that.
You know what to do, you are a smart guy with access to lots of information. As most posters say, avoid faddy diets, eat well from a nutrition point of view but aim for a calorie deficit. Increase your exercise and include some resistance training ( weights etc.)
What you need is a way to stick to it. And that’s the tough part, because most of us find loosing fat hard and uncomfortable. I’m sure some people here don’t find it difficult, and they are lucky, but for most of us it’s not.
Using negative feelings about yourself as a motivation is not (IMO) the best way to do it. You need a positive mental image to work towards, one that is real and easy to picture. It doesn’t need to be a picture of how you look, it might be a mental image of yourself sprinting up a hill past your astonished mates. Finishing a race, shopping for new jeans – whatever you want. Having this image bright and detailed in your mind is invaluable when your hand reaches for the chocolate biscuit, or ask your wife to make healthier food etc.
Just my 2p’s worth.
You might think that all this is cobblers but I have found it works for me.
Feel free to contact me if you want any more of this kind of stuff.
Robert