To the OP: That happened to me for awhile. It was right around the time I decided I was going to stop being an amateur and go back to school to learn to shoot digital and do photography full-time (Digital was just evolving and I knew it was going to change things. We still shot mostly film and processed wet in the dark, but they were teaching Photoshop and scanning as well).
Anyway, I got kind of obsessed for awhile. Everything I looked at I would take it apart and analyze the color and form, think about what aperture I'd like to use, composition techniques. I was a mad man. I had to have a camera with me, I had to have all focal lengths covered. If I didn't I'd find something I couldn't shoot and I'd dwell upon it for days.
At some point I realized I wasn't even seeing what was in front of me. I couldn't see the forest for the trees. Everything was shutter speed/aperture/line/form/texture... I'd get back to the hotel or home and realize that I capture these terrific images, but I couldn't remember actually SEEING the world. I was only seeing parts of it. I started leaving my DSLR at home. I'd get a little nervous about missing shots, but I also stopped to look more, to breathe in and smell (well not all the time), to remember the way the breeze felt, all of those things that I missed out on by obsession.
Then the obsession was gone. I started carrying around a camera again, but usually a smaller DSLR with a small prime. Not my pro rig. I started snapping more instead of over-analyzing. Now when I'm out and about I generally bring a Leica and one lens. Sometimes a small DSLR like my D5300 and a small kit zoom. Hell, I leave it in P mode when I riding my motorcycle and snap off shots at stop lights. I don't even care about the settings.
I don't really know what made me change, but it happened. Sometimes you have to force yourself to see outside of the viewfinder and only then can you realize what you should be putting into the viewfinder.
That probably makes no damn sense, but that's my experience.