First off don’t think that some ‘new tool’ is going to solve the problem you’re having with productivity. You can use any tool poorly or you can keep doing the same old unproductive things in a new tool you did with an old tool.
Second, don’t mistake productivity for effectiveness. We want to be effective, not productive.
The big things I see that people do to sabotage their effectiveness are:
– focusing on the wrong things
– not having a practice of planning their week or day
– not reviewing their tasks in light of their yearly/quarterly goals