You'll see it when you believe it.
In my own life I know that my state of cheerfulness is a reliable gauge of my level of spiritual enlightenment at that moment. The more cheerful, happy, contented, and satisfied I am feeling, the more aware I am of my deep connection to Spirit.
I don't believe in 'thinking' old. Although I've transitioned through many bodies - a baby, toddler, child, teen, young adult, mid-life and older adult - my spirit is unchanged. I support my body with exercise, my mind with reading and writing, and my spirit with the knowing that I am part of the Divine source of all life.
Become slower in your journey through life. Practice yoga and meditation if you suffer from 'hurry sickness.' Become more introspective by visiting quiet places such as churches, museums, mountains and lakes. Give yourself permission to read at least one novel a month for pleasure.