Evaluating down the values, beliefs , interest and skills is essential indeed to know how valuable you are. Your competitiveness to anything explains more of your self-worth.
Whatever you say must be followed with action. Words without execution according to what has been said does not make sense at all. You are basically fooling around yourself. Essentially knowing your personal core values is a must.
The Personal Core Values are:
We have to learned our likes and dislikes in order to identify our values and beliefs. In decision making values and beliefs correlated to each other on what you plan for your life. Knowing our self-worth is a must before others.