This quote by Sophocles suggests that it may be much better not to have actually been born at all. The word "prizing" indicates that being born is not something to be valued or respected. The belief expressed here is a reflection of the traditional philosophical dispute surrounding the worth of life, and the question of whether presence is eventually worth the struggles and discomfort that feature it. While some might argue that life is a precious present, others compete that the hardships of life exceed its advantages, and that non-existence might be more suitable to the experience of life's tribulations.
"Don't lower your expectations to meet your performance. Raise your level of performance to meet your expectations. Expect the best of yourself, and then do what is necessary to make it a reality"
"The man who makes everything that leads to happiness depends upon himself, and not upon other men, has adopted the very best plan for living happily. This is the man of moderation, the man of manly character and of wisdom"