Do you know the difference between a result and a task?
You work on a task, but you complete a result. I am going to a seminar and then on vacation at the end of June. I will be gone for three weeks. While I am traveling, I don't want to worry about whether or not I will have time to write and email a blog post. I desire the result of five completed, edited, and scheduled blog posts before I leave town on June 21. A task would be a bullet point labeled "blog posts".
I could write "blog posts" in the margins of my planner daily for the next 15 days. However, other things will pop up, and I may or may not scratch that item off my list. Also, what do the words "blog posts" mean. Does completing the outline count? Do they have to be edited? What if I write them but don't schedule them? The result of having five written, edited, and scheduled blog posts clearly identifies the result I want.
Furthermore, how long does "blog posts" take? I know it takes me approximately 1 hour to write and edit a post. It takes me another hour to schedule a batch of posts for email, Facebook, and my website. By understanding the result I want, I know how long it will take and can block the appropriate time accordingly.
Take some time this week to look at your task list and turn it into a results list. You may be surprised at what you learn about why you aren't getting things done.