The quality of your life is determined by the quality of your thoughts and the quality of your actions.
If your thoughts are petty, cynical and vindictive, your life will be filled with frustration and regret. If the actions you take are the minimum needed to get by, the you'll always be just barely getting by.
When your thoughts are positive and expansive, your actions bold and determined, you will live with abundance and fulfillment.
Quality of life is not based so much on what you have. Rather, it depends on how you choose to view, and what you choose to do. Think of every moment as an opportunity. Act with purpose, direction, enthusiasm and commitment. Every little thought, every little action, combines to determine the quality of your life. Every day is a chance to create, by what you think and what you do.