I find that my productivity goes down 90 minutes into a task. However, a 15-20 minute break does the trick and I find myself productive once again. The trick is

I find that my productivity goes down 90 minutes into a task. However, a 15-20 minute break does the trick and I find myself productive once again. The trick is to weed out the distractions (especially if you work from home) - TV, family, news/shopping sites, HN...