Biggest part of burning out was mainly due to just trying to do as "normal" hours as possible which in hindsight was a terrible idea since I'm basically at half-capacity.
The things I didn't like in IT were the printer cartridges, troubleshooting projectors. I liked setting up devices, setting up user credentials through the AD, that sort of thing.
With fiddling I've come to appreciate FOSS and well light weight well working stuff.
One thing I have had problems with is doing things that others have solved (was thinking of making a website tracking app thingie but apparently I shouldn't bother and just run a node server and plop this thing in it). It's a bit discouraging but I know it's probably better I still do it regardless to gain experience. My languages of interest are JS and Lua if I ever start doing that.
I've worked with a therapist for unrelated reasons for 6 years and this has been one of the topics for the last year since I crave more independence. I've been the happiest in my life this year all things considered.
Sorry if my response isn't very coherent English is not my native tongue.