To be seventy years young is sometimes far more cheerful and hopeful than to be forty years old. Oliver Wendell Holmes

I am determined to be cheerful and happy in whatever situation I may find myself. For I have learned that the greater part of our misery or unhappiness is determined not by our circumstance but by our disposition.
- Martha Washington

To be seventy years young is sometimes far more cheerful and hopeful than to be forty years old.
- Oliver Wendell Holmes

Further reading: 7 Secrets for a Happy Life

Happiness comes from a conscious choice to live life joyfully

How to Survive When You Hate Your Job