When I encountered setbacks or pressure and I always relax myself because it is important for us to relax ourselves.
First, I lay down on bed and listen to the music for a long time. Then I eat food like chocolate, sweets and so on. Finally, I go to the gym and play badminton. When I am sad, disappointed, I sleep.As you know and when we are negatively, we tend to make mistake in our life as we lose rationality.
What's more and these can make me concentrate on my study better. Also, different people have different ideas.