Things that happen to you in your life, change your perception and understanding of your world. Those things could be external events, or it could be internal events, like illness. You start young, fresh and full of energy (left edge - green, blue, yellow). But you have a disease (upper left corner burgundy). It creates an obstacle ( the adjacent white figure). it distorts the green and almost blocks blue.You get depressed (the grey figure in the upper center). Those white obstacles are making you bitter and your scope smaller. At the end what left is pragmatism and common sense.