Focus

Focus is a must to achieve anything, however small. One must concentrate on the task at hand. If we pay full attention to what we are doing we increase the chances of doing that well. I am not a fan of so called multitasking. One should do only one job at a time and do our best at it. Do your best and leave the rest. That is the slogan to be followed if one wants to be successful. And if inspite of it you don't reach your goal, don't loose heart. Tomorrow is after all another day. persistence pays of in the long run.
When you focus you can look at everything very objectively and take the right decisions.