My grandma passed away at 98 1/2 and I want to live to 100. I want to be able to do what I can do even at 100.
I think you have to control the materials to an extent, but it's important to let the materials have a kind of power for themselves; like the natural power of gravity, if you are painting on a wall, it makes the paint trickle and it drips; there is no reason to fight that.