Bill Gates of Microsoft says that it is only through focus that you achieve ...no matter how capable you are.
Focus is necessary to achieve, too often every problem arives on your desk and you get drawn into dealing with it.
Today, sit down and write 8 words about what your role is really about. Then look at your to do list and prioritise the items that will move you towards your goals. Don't be sidetracked by issues that you can delegate or that are non critical. Success depends on achievement. Turn the email off - look at it 3 times a day. Delegate those tasks that can be - even though you enjoy doing them. Focus on what is really important - and if you dont know what that is, then your focus needs to be on determining it.