Most people, when they reach a certain age, let down and talk about what they used to do. Well, who gives a damn about what you used to do? It's what you're doing now.
People don't die of old age, they die of neglect.
Your age is the sum total of your physical condition, the condition of your mind, and how you feel.
I never think of my age, never. I could be 20 or 100. I never think about it, I'm just me.