I remember when I first started my Kindle reading experiences I had 300 books at one point and was freaked out thinking I had too many. My TBR list is broken into two categories. The first category is what I called “up next”, this is for the books that I really want to read and are putting it above all the others. And then the next is the plain TBR list which is books that are most likely to be the next in a series of books I’ve already gotten into. The best way to tackle it simply just pick a book and read it. Reading should not be considered a chore, you should never feel anxiety over your TBR list. If you’re reading actual books, consider putting them on your bookcase without the spines showing and do a “mystery book”. If you pull a random book out of your shelf not even knowing what it is, and open it to the first page without even looking at the title and just start reading, there is an actual game in that. Guessing what book you’re reading. It’s kind of hard to do on a kindle, but being able to pull a book off a shelf opening it up to the first page and not knowing what it is is very exciting. Only do it with books that you really certain you want to read.
See it only works when you know you want to read it. It also helps to close your eyes when putting the books on the shelf so you don’t know what it is. Maybe numbering the books and then putting the numbers on paper in a little box and drawing the number to pick a book?