Distracting techniques such as listening to music you enjoy and going for a walk or writing can relax you and clear your head of stress.
Alternatively, writing a "worry list", noting all the things that are driving your distress at the moment and break it down into bite size chunks. Allowing you to see what you need to do to resolve some of these worries.
For Example: 'You are struggling with the amount of deadlines you have due. An action could be to speak to the module leaders and your personal tutor to gain some advice and assistance. Or developing a study plan that breaks down your deadlines into bite size and achievable goals.