You may want to start GTD (Getting Things Done), a productivity methodology popularised by David Allen. It’s a really simple, but lucid, way to get all your projects and tasks in hand – for a clearer head and better output.
I’ve been using it for 7 years now, and people who know me are amazed at how much I can handle – and I’ve a good rep in my day-job for delivering quality projects on-time.
Once you have the basics under your belt, you can customise it to suit your workflow and whatever important stuff lands in your in-tray. It’s fab!
You only need the book to start ($10?) and to get started.
Once you do, feel free to PM me for help.