Stress affects decision-making, judgement, performance and the ability to cooperate. As field staff on international missions, you will encounter difficulties that can cause severe stress. Stress affects your health by directly affecting your body and by weakening your immune system, which makes you more susceptible to illness. Research and experience have shown that it is important to deal with stress and crisis reactions to prevent ill health. This pamphlet aims to inform you about how you can cope with stress when on mission and what to do in situations that result in crisis reactions. At the end, you find a self-test and some breathing exercises for relaxation.