I have a notebook with a million ideas too, but over time I realized that the key to productivity isn't coming up with brand new, innovative ideas for the masses, but to laser focus your creative thinking on the project at hand.
Adderall. Strattera. Pharmaceuticals. :bowdown:
Nothing has helped me become more productive than to get on a concentration-enhancing drug, and I'm serious. While I don't condone taking psych meds daily, especially stimulants, taking them when you really want to get something done is really priceless. I think you brought up a good point. Especially with beginners' enthusiasm, or the enthusiasm you get when you get your first content live or your first internet paycheck, ideas start manifesting and branching out. I think we all have our notebook of ideas whether it be written down or swirling in our heads.
The hard part is picking one and running with it. I have a SEVERE problem with starting a project, getting the hard part done (the setup, the initial content, initial execution) and then start another project and lose interest for the easy part (the site and PPC campaign are online but they need a little tweaking). In fact, I have a content MFA site that is STILL waiting for me to insert some of its meta html (description, keywords).

I have a forum that I should update to the latest version. But I'm so busy working on websites in Dreamweaver (most of which arent even online) I haven't been focusing on what HAS been making me money. I haven't been tweaking what I already have to maximize it's output.
I recently got a perscription for Strattera (a non-stimulant, uncontrolled substance for ADD/ADHD) and nothing really beats going to the library on campus (or wherever you prefer to work), set up the laptop in a quiet corner, and GET THINGS DONE for once.