With regard to writing, it sounds like you have a process that isn't working for you. That's not something wrong with you or with your process; it's a mismatch, like someone putting on a shoe that's much too large for them.
Writing a series means playing a long game, investing considerable time and effort up front in hopes of considerable returns down the road.
Think about how you can invite yourself to write and make writing feel like the thing you most want to be doing right now.
We often have to confront the undeniable fact that writing takes time away from other things that we, or other people, think we should be doing.
Identify scenarios in which you're likely to need information, and then determine both what you'll look for and where you're inclined to look for it.
The letter writer from #47 just wrote to me with a brief and happy update.
Asking beta readers to start reading, finish reading, and talk to you about what they read doesn't seem like a lot, but it can feel pretty daunting from the other side.
You have to pace yourself, like an athlete with an injury doing slow small exercises before returning to marathon running.
Celebrate your glorious ideas rather than treating yourself as a failure because plots are trickier for you.
Today is the fifth Tuesday of the month, which means that my answer to this heartfelt letter is available exclusively to my Patreon patrons.