The foremost lesson of philosophy should be the lesson of perspective. When I say perspective, I mean the different interpretation of events that can be given from viewing the matter from different vantage points.
What we think is a product of our relative position to an issue.
You say to me, how oppressed I am with earthly worries and anxieties. I can barely continue in my day-to-day struggle. I feel overwhelmed by the brutality and iniquity of the world.