every horse thinks its own pack heaviest
Everyone thinks that their problems or burdens are worse than anyone else's. Of course she's whining miserably with just a cold—every horse thinks its own pack heaviest.
Every horse thinks its own pack heaviest.
Prov. Everyone thinks he or she has the hardest work to do or the most difficult problems to overcome. When we were growing up, my sister and I each thought our own chores were harder than the other's. Every horse thinks its own pack heaviest.