You don't need rehab, but you will need to focus.
Potential projects is how you end up owning a huge collection of virtually scrap motorcycles all with a dream of "one day." New ideas come along faster than finishing projects.
I started my XS1100 trike project years ago. First it was just the donor bike which I stored for several years("stored" includes moving around and giving up shop space). Then I got a differential which was also stored. It lived variously in my garage and my in-law Pineview property. Last winter the project started in earnest with much fabrication being done. Spring and Summer always sidelines a major project with rider maintenance trumping a bike build (in my case this included a BMW transmission rebuild/fail).
I am gearing up to pick up where I left off. I just received a new steering neck tube which I am going to compare with the donor bike one I have been working with thus far. Once I determine which steering neck tube I will use, I can get back to fabricating the frame.
If you look at the time lines of some of my past builds, few have been quick. The Stolen Sportster was 5 years from purchase of the donor bike to completion. Focus waxed and waned, but in the end I have an excellent road worthy bike.
I think my fastest was the Suzuki GS650 Monoshock Conversion Cafe Racer which was the winter of 2011/2012 and almost made it to the June Show 'n Shine.
Stay focussed on finishing one (maybe two) projects at time. There has never been I time when there wasn't a donor bike out there at a screaming price with my name on it. There always will be. Let someone else store them for years until you want a new project.
Peace & Grease, Dennis