When in a pressure situation, I look at every ball as the money ball. And tell myself I need to make this ball and get position to the next ball because, If i dont, i will loose.
The other thing is to practice, being able to run out from anywhere on the table with 3/4 or 5 balls on the table. If you can do that consistantly then that is another step.
Being able to make those last 3 or 4 balls on the table, all the time everytime, is a big deal. Most guys get to the last 3 or 4 balls and the table is wide open so they get sloppy with thier position and how they play the table.