First of all, suspended from work. In the state in which you are now, performance is not your main trump card. The more you work in this state, the more you lose time for future recovery. Complete urgent matters and arrange yourself a break.
In a fixed pause join in their favorite thing. Regardless of what it looks like, then you need to exercise that brings you pleasure. Unload their cargo repressed emotions. Preferred type of training is of great adrenaline - in this case you get rid of burnout very quickly.
Talk and spend time as possible with people you love. If you only have five minutes to come back to normal, use them to talk with their families and loved ones. This is your closest people who are willing to help you when you really bad. Keep this in mind and do not forget to support them in difficult moments for them.
Later ration their workload, do not let hectic activity. They are the greatest impact on your mind and do not work in a relaxed mode, leading to burnout syndrome.