This post is an explanation of how my personal motivation works, and I am curious how others here relate to it, and if it is a common thing with ADHD.
For starters, I have inattentive-type ADHD, have been diagnosed and on various medications for ~5 years, and am roughly college age for context. I am very highly motivated by other people, basically anything where people are depending on my for something, or will directly help/harm someone depending on my actions. Of course I still have executive dysfunction struggles regardless, but that external motivation helps immensely.
In school this manifested as struggling a lot with homework (often not doing it), but doing very well in-class and with group projects. In my limited work and internship experiences, somewhat predicably, I have done very well as directly working hands-on with coworkers highly motivates me. Unfortunately, personal life progression things like actually getting a job and finding and applying for further education is the exact opposite, and is a struggle. There are of course plenty more examples, but I think that gives the gist of my experience.
Terrafirmacraft and Gregtech do actually have modern 1.20.1 versions! I am currently actually playing a modpack with some friends called Terrafirmagreg, which as the name implies is tfc and Gregtech integrated, along with a bunch of other QOL and add-ons. It is a very fun, and very very long pack.
Edit: I believe there is a 1.7 version of the pack as well