Good Luck Zeno. I can totally relate to your story. I am now 54 and in the best shape I've been in for the past 25 years! I came to "that point" in life, where you are now, about 3 years ago. I'm a touch over 5'10" and three years ago, topped out on the scales at 230lbs!
I am now routinely weighing in between 187 - 192. I adopted a fantastic program managed by a doctor, who was once a professional body-builder. He also is a friend. His program has transformed my life and thousands of others. If you're interested, you can learn more at
www.fitfatherproject.com. It's cheap and loaded with a ton of great info... From food, to supplements, to training, sleep, etc... I sweat by the program!
Oh, and I also started using a VariDesk at work and I love it!
Good luck buddy!