Honestly, start a side project or get a hobby. Take a vacation. Go for long walks on the beach. I really doubt any other tech company that pays as well as Go

Honestly, start a side project or get a hobby. Take a vacation. Go for long walks on the beach. I really doubt any other tech company that pays as well as Google will be any more interesting. And most people eventually get bored with their jobs. There is no job that isn't repetitive to some degree. Also, you seem to be downplaying your experience and what you've learned but I highly doubt you'd have kept your job if you were truly slacking. Odds are you just got efficient at doing your job and are getting bored. Anyhow, there is something to be said for a stable, well-paying job, so go figure things out in your personal life before you shake up your professional life.