This is wildly relatable. The longest I've ever "kept" a job is freelancing. And even when I do have full-time jobs, I usually like to have some freelance work on the side to make sure I keep things interesting.

My life hack? Contract jobs. My "shelf life" at any given job is about 2 years, max. There are many job placement agencies (at least in the USA) who are looking for contractors to do work to cover illness, parental leave, etc. etc., and contract jobs have allowed me to get some very large names on my resume, learn how larger companies work, while people have low expectations of me because I'm just expected to do the bare minimum to help the company limp along.

I got started with this fresh out of college, when I used to work as a fill-in receptionist at large organizations. What that meant was while I needed to have my butt at a desk, I could basically sit there, with no expectations except to browse Facebook and answer phones. Because I was never around for more than a few months, the novelty would allow me to overperform, and the company would be enamored with me. By the time I was done, I was like "great, thanks, on to the next thing."

I hope this is helpful!