A great percentage of many people’s suffering is based on illusions. People feel they have problems and difficulties when in reality the problem exists solely in their minds.
When you have a problem, ask yourself, “how would I view this problem if someone else were in this situation? Would I consider this a valid problem or not?”
This can help you gain a more objective perspective. – R’ Zelig Pliskin based on Michtav MaiEliyahu