Don’t under estimate the power of a notepad.
Our brains are always thinking. Some of us are better at multitasking and keeping track of all our thoughts than others. The notepad is a great tool to have available at all times. When you think of something you have to do, instead of stopping everything you are doing, quickly jot it down. This way you can concentrate on finishing the task at hand and still remember what that thought was. Use it in meetings, for requests from co-workers, or even personal tasks you need to do.
Technology is great, but sometimes sticking with the old school pen and paper can go a long way too.