Most time managing programs out there use to-do list, and most of us just have trouble completing them. There’s no bullet-proof approach, but the Zen habits blog has a list of possible kick-starters:
Have you gotten good at organizing your tasks in a to-do list, but have trouble actually executing them? You’re not alone. (…)
Unplug. The biggest distractions come from connectivity. Email, feeds, IM, Twitter, phones. Unplug from these connections while you’re working on your single task.
Baby steps. Don’t think in terms of having to tackle an entire work day, or an entire list of stuff to do. That’s overwhelming.