Thanks for the pointers.
As a kid, I used to complain often and loudly that I would never need any of this stuff. Turns out I was wrong.
You can turn around your life. I did so in my 30s. I am only saying this because there's a high chance you are an old fart since you know and like kraftwerk.
As you have correctly guessed, it's not too late.
I like to remind myself of the encouraging phrase "We overestimate what we can can accomplish in a year, and under estimate what we can accomplish in five". Compounding gains is the game and humans always seem to underestimate their power