You might feel better about it all tomorrow if you channel some of that energy toward the thesis proposal - at least jot down some of those ideas! But I completely know what you mean... Sometimes I "have to" clean everything before I can consider working. In the process I start 5 other projects, which then sit around glaring at me for months when they get abandoned shortly after.

But I wrote my diss proposal in 7 weeks. I forced myself into a corner by setting a proposal defense date and then rode that hypomanic pony all the way to a finished document in record time. I think the only reason I could do it was that I had a hard deadline, so I couldn't let myself get all distracted like usual.

And that was when I was still on ADHD meds, but for some reason the pdoc didn't think it was a good idea for me to stay on stimulants...