Good question - made me revisit my memories.
TLDR some aspects were a progression, but the planning part was something I had to try out over a year to convince myself that I finally have something that works.
I'd say I have always done the daily todo all my professional life. Started it as my daily work plan when I was a salaried employee. Only tracked work-related tasks with it, but it was necessary because I had multiple project responsibilities and deadlines then. I actually thought of myself back then as a very disciplined person.
Even the life goals thing is something I have been doing from my salaried years. An annual document where I wrote details about my career wishes and personal improvements for the coming year. There were plans in those docs, but they were rather nebulous and not tracked.
That system worked ok for my salaried life. But when I became a consultant, things fell apart. When I had client projects to work on, my work-life balance became terrible, I missed project deadlines constantly, missed out on hobbies, and felt stressed and demotivated.
When I did not have client projects, I went the other extreme - making lots of plans but terribly distracted and not finishing anything.
Until then, I had not realized just how much of my earlier discipline was not because of me alone, but actually because of the structured and supervised environment inside a company. When I went alone, much of my discipline disappeared, and along with it, my self-confidence. I had actually refused lucrative client projects because I wasn't confident of meeting any deadlines.
I tried many planning systems over those years. GTD, Trello, Mind mapping tools. It's taken me a lot of self-analysis, experimentation and tweaks to understand why I had planning problems, and what I should do to overcome them. The main evolution between the system I have now versus the system I had back then is that all life goals now trickle down into concrete hourly tasks. While 2015 was a terrible year professionally, this system helped me improve my situation in 2016, and more so in 2017-2018. It's working out for me, thankfully.