Arts in Health
This is something no-one wants to hear, but it is true for you as much as it is for the critically ill patients I treat each day in hospital. Many of them are much closer to the end than you are, however, life is unpredictable, chaotic and sometimes cruel. Few of us will die at the time of our choosing.
There are obviously some contradictory and complex factors at play - it is not simply the case that creativity is therapeutic and that art makes us happier.
The part of the brain that dementia damages is the bit that gives us access to our memories, not the memories themselves. Most memories are stored as images. Images can give access to emotional memories.