Controllers are chosen for a number of qualities. Chief among them are: the ability to stay calm under pressure, the ability to make decisions while processing different types of information and excellent spatial awareness.
These attributes are tested, developed and strengthened over three years of intensive and tailored training. Part of that training is to remove stress and its impacts from the role. There are times when it is a high-pressure job but this is managed carefully.
One method for doing so is time-management. In order to optimise performance and focus, controllers are on duty for 90-minute periods followed by a break of 30 minutes. Their shift patterns are also organised to ensure best practice.