Wisdom comes from experience. Experience is often a result of lack of wisdom.
Travel moulds a man, people mould his wisdom and experiences mould his life. . . !
The curse of mortality. You spend the first portion of your life learning, growing stronger, more capable. And then, through no fault of your own, your body begins to fail. You regress. Strong limbs become feeble, keen senses grow dull, hardy constitutions deteriorate. Beauty withers. Organs quit. You remember yourself in your prime, and wonder where that person went. As your wisdom and experience are peaking, your traitorous body becomes a prison.
Spend time reflecting on your emotional and physical existence and how that applies to the voice. You have to apply that wisdom and experience when you sing - it's what comes through.
The man scarce lives who is not more credulous than he ought to be. . . The natural disposition is always to believe. It is acquired wisdom and experience only that teach incredulity, and they very seldom teach it enough.