Try this for a day: don’t answer every phone call. Stop checking your email every two minutes. And leave work early. You’ll be astounded at how much more you’ll get done.
According to a study published in the Psychological Review conducted by Dr. K. Anders Ericcson, the key to great success is working harder in short bursts of time. Then give yourself a break before getting back to work.
The trick is staying focused. Ericsson and his team evaluated a group of musicians to find out what the “excellent” players were doing differently. They found that violinists who practiced more deliberately, say for 4 hours, accomplished more than others who slaved away for 7 hours. The best performers set goals for their practice sessions and required themselves to take breaks