Your self-concept precedes and predicts your levels of performance and effectiveness in everything you do. Because of the law of correspondence, you always behave on the outside in a manner consistent with your self-concept on the inside. All improvement in your life therefore begins with an improvement in your self-concept.
You have an overall self-concept that is made up of all your beliefs about yourself and your abilities. This bundle of beliefs includes all the experiences, decisions, successes, failures, ideas, information, emotions and opinions of your life up to now.
This general self-concept determines how and what you think and feel about yourself, and measures how well you are doing in general. To live life by design means to redesign your current design that is not serving you.