The shadows exc

relax completely

For five min, study the shadows of all of the objects and people around you. Try to identify exactly which part of the object or person is casting a shadow.

For the next 5 min, continue to do this, but a the same time, focus on the problem you are trying to solve. Look for all of the possible wrong solution to the problem.

Finally, spend 5 more minutes studying the shadows and thinking about what correct solutions remain. Eliminate them, one by one, until only single correct solution is left.