Optimism is about inspiring progress. While we must constantly look to improve upon our weaknesses, always focus on their strengths. After all, it is your strengths that brought you to where you are today. No matter what happens, focus on how you have excelled. Build upon the small victories rather than allowing the defeats to drag you down.
Be aware of your weaknesses, and do not be afraid to utilize the skills of others when they are better suited to a task than you are. There is a solution to every problem. No event is positive or negative, it is our reaction to them that makes them positive or negative. This means that you can potentially reframe any situation.