Yeah... I've been in some nasty slumps.
I've tried the brute force way, of shooting everything & anything and forcing myself to get through it. ; Not very successful.
Ive tried different techniques, I've forcing myself just to use one prime lens or anything different to break out of the creative doldrums. ; I've tried impromptu road trips to go photograph something different.... as there are no white, sandy beaches here.
For me, my photo slumps are ; mainly psychological and have very little to do with photography or creativity. Its usually something else in my life causing the creative juices not to flow. ; Generally as suddenly as they stopped, they start again.