Acting with rationality
To have a good self-esteem is very important to be confident on your reasoning ability. This is part of your overall capability to cope with life challenges. You may lack physical abilities that ordinary people have, you may be handicapped, but, as long as you retain your capacity to reasoning, you have the most valuable asset to confront the struggle for life.
Good sight or strong limbs are just tools to make something. You may have good or bad tools, but what is really important is what you are going to do with those tools, and this should be decided by the use of reason. You must trust, in general, on reason as a quality of the human mind, and, in particular, on your personal reason. These are two aspects that do not necessarily go together–you may accept that humans in general can make profit of reasoning, but you may have doubts about your own reasoning ability.
One of the soundest motives to think well of yourself is the belief in your ability to influence your destiny. To believe in yourself, you must be first be convinced that any man is capable, up to a certain degree, of influencing his destiny. Except for natural catastrophes, stock market depressions, etc., you must believe that a man’s actions can affect the course of his life.
If you believe the course of a man’s life is fixed from the moment he was born, what is known as the theory of predestination, then you have not means to influence your life. Whether you believe you are at the mercy of a supernatural being, or that your life is determined by the position of the stars when you were born, the result is that you can do nothing to alter your fate.
You may think that humans, as a species, have certain power over their lives, but you may distrust your own capacity. You can consider that your reason, the faculty that enables you to deliberate and argument, is not strong enough to be able to tell you what to do. In that case, you will leave decisions in the hands of other people, other human beings like you, to whom you give the power to decide.
It must be understood the difference between reason and knowledge. There are people from whom you may take advice, as lawyers, engineers, physicians, etc. If you have a health trouble, you should ask the advice of a physician, but this does not mean to let him decide in your place. Your life should be your responsibility and, whether or not you take advice of someone more knowledgeable, it is you who must decide what to do. To make a decision you must use your reason to examine the alternatives and your will–your faculty of choice and decision–to choose the better path for you.
It is other factor of self-esteem to accept yourself as you are, and to accept yourself you must first know yourself. If you know yourself, you will know your weaknesses and your strengths. If you know–due to dispassionate study of yourself–that you are not so good at reasoning, you may ask somebody more clever than you to analyze for you what are the alternatives, and the costs and benefits of each one, but finally it is your decision what counts.