Durable

Definitions: (1) lasting in spite of hard wear; enduring; (2) capable of continual or frequent use; stable

Synonym: permanent

Quotes:
• The word of man is the most durable of all material. — Arthur Schopenhauer (1788–1860) German philosopher
• Affection is responsible for nine-tenths of whatever solid and durable happiness there is in our lives. — Clive Staples [C. S.] Lewis (1898-1963) Irish-born British novelist

Comment: One of the reasons people live to a ripe old age is their ability to take things in stride. Let difficulty roll off of your thick skin. Accept the scrapes, do what you can about them, and then let them go.