Effective poem on waiting. Waiting is a virtue because it is associated with patience. Without patience nothing is possible. They are almost synonymous.
"How do you have patience, if you are not willing to wait."

Sometimes it takes longer period of waiting for people, for love, for restoration of health and equilibrium of mind and body.
"How do you see true beauty, if you are blind."
Physical blindness is ok as long as you are spiritually alert and has the ability to "see" beyond the merely material like Milton did while he created matchless classics. So is beauty. Few can see the beauty of God behind each smile, a sincere wish for health and happiness.

"Patience is the key to everything.
Just wait."
Well said. Once again if I may quote from Milton "They also serve who only stand and wait". Right now waiting plays a great role in my life. I am waiting for a brighter tomorrow. I know it is going to dawn soon.

Thank you for an uplifting poem.
It flows well.

Write on!