Dreaming about cracks on things may represent insecurity, breakdowns and catharsis, meaning the dreamer must let their problems show before they can go on living without the constant strains and stress.
Dreaming of cracking can also symbolize or represent strong anger or indignation. It also imply that one is not living up to their own expectations. The dreamer may feel as if they are going nowhere in life, and breaking promises. This can
lead to great stress and anger explosions for even tiny incidents and misunderstandings.