Yes I've experienced the "too much of a good thing" effect with special interests. When they brought out multi-track programs for music computers, for some time I was fazed by the sheer number of exciting new possibilities.
My brain is always creating new tangents for any line of thought, and as I'm often thinking about trailblazing and looking for new, better ways of doing practical things, it often happens that I keep getting new inspirations, so many that I'm overwhelmed.
My mind is usually racing away processing ideas, and I'm usually racing away looking for information about my ideas. Sometimes I think I'm going to burn out. As I tend to get rather stuck in details, it's hard for me to step back and look at the big picture in order to regulate what I apply myself to, so I rarely weigh things up or ask myself what in the world I'm trying to do.
I've noticed all this more since I retired from work, because I've got more freedom now to organise my activities in whatever way I deem best for me, so I can no longer so easily blame the restrictions other people used to impose on me. It looks pretty clear that although my employer was trapping me and getting in my way, I'm also quite capable of trapping myself and getting in my own way.