I've never been tempted to "sell it all" with my bass gear. I'm pretty new and I definitely still love it all. But I have experience here in another avenue...
I make beer. or... I can. 10 gallons at a time, all grain recipes. Many of them my own. I make better beer than you can buy, for sure, because it's been judged, on multiple occasions, and I don't have to worry about cost effectiveness when it's just for personal consumption. I have a beautiful stainless steel brewery that I built myself over many years.
I haven't brewed regularly for a few years (maybe corresponding to my bass playing...). Many times, I've been tempted to "sell it all!" for one reason or another. Bass gear, fishing gear, etc....
The point being, if I were ever to "sell it all", I know that I would never brew again. And part of my hopes that when I'm an old man, I can go fishing, with homemade beer, and maybe play my basses when I get home while screaming at kids to get off my lawn.
I assume the same would go for bass gear. If you sell it all, you'll end up regretting it someday.
Take a break, maybe sell a few things you don't use much. But don't do anything that you'll regret.