This quote belongs to Joseph Addison (1672 - 1719).
You will find that you have more to the good than to the bad. Do not compare yourself to others; do not concentrate on what material goods you need to make a "better life." You have everything that a person needs to feel fulfilled - a family to encourage you, an education to lead you, and loved ones and friends to care for you. These are the important elements of life. Be thankful to your spiritual leader, as He plays an important role in your happiness and satisfaction, as well "Do not work to get what you want, but want what you have." Remember these words at moments of frustration and future trials.