Being humble and never stop the process of learning, also acknowlegdng your strengths and weakness. To then be able to capitalise on either areas dependent on the situation. This will help to be satisfied with your achievements.
I think we should always be satisfied with what we have but we should never stop that crave in us to achieve more.
Step by step we reach our goal and in every step we will have appreciation aswell as depreciation, we just have to be satisfied and learn from it and work hard to reach our aim