If you feel burnt out, nothing will change while you’re sitting at your desk. Go out and have some fun.
At work or at personal level, we often arrive at a deadlock situation and are not able to find a solution or arrive at a conclusion. At such times, take a break; for a moment, walk out of the room and start thinking from fresh perspective. Try to understand the problem or the situation. Brainstorm approaches to resolve the conflict or think of options to derive workable solution to the existing problem.
Very often breaking the problem/situation in small parts helps evaluate it easily and in the process you may find the solution.
So, take a break, brew tea or coffee, and enjoy the break. And then look at the issue in new light.