if you don't care about anything, meaning you have no gratitude, how do you jumpstart this process?
When we're depressed we have a tendency to fall into the mindset that everything is bad. Reminding yourself that there is something good in your life helps break that cycle. If you can make it a habit your brain actually gets better at finding the positives and it starts to create a positive feedback loop.
P.S. If you want to learn how to make habits easier I highly recommend Atomic Habits https://www.goodreads.com/book/show/40121378-atomic-habits?f...
https://news.osu.edu/gratitude-interventions-dont-help-with-...
For example, here are the first couple pages of results I got for gratitude studies. Every single one found a positive affect.
https://journals.sagepub.com/doi/abs/10.1177/135910531557245...
https://www.tandfonline.com/doi/abs/10.1080/0144341090349393...
https://link.springer.com/article/10.1007/s10902-014-9542-3
https://www.cambridge.org/core/journals/spanish-journal-of-p...
https://www.sciencedirect.com/science/article/abs/pii/S00926...
https://synapse.koreamed.org/search.php?where=aview&id=10.12...
https://www.sciencedirect.com/science/article/abs/pii/S01918...
https://www.tandfonline.com/doi/abs/10.1080/15298868.2015.10...
Focusing on what you're grateful for is one of the more powerful and best proven methods to combat depression. I've been through clinical depression and consider it the key to my recovery.
Also, obligatory kkrieger link: https://en.wikipedia.org/wiki/.kkrieger
I am amazed at how few of my early millennial peers have never heard of the elementary backstroke.
Anyway. The main character had an easy way of breaking it: toss some gravel in one of your shoes. It'll disrupt your natural walking pattern in a randomized way without you having to even think about it.
Unless you focus on the very latest releases, most authors are already dead. If you round up just about any list of great works from the 20th century, you'll find that most of those authors are dead and have been for years. If you like 19th century books, all of those authors are dead.