Make one job routine.

Tech-dexterous teenagers are probably no better wired to ace computer games than the rest of us; they've just spent more time practicing with their gadgets, says Marois. Researchers believe that if you repeat a set of skills over and over in exactly the same order and way, you will get noticeably better.

Try to make at least one task something you do all the time. This allows you to fit the others into an already established pattern.