Self-esteem is how you evaluate yourself on an imaginary scorecard. If your self-esteem is low, you will score less because you tend to think poorly of yourself. It is not uncommon to experience this. Fortunately, the therapy is at hand- in fact in your own hands. All you need is the guidance, which I am going to provide you with. I will be suggesting you ways and means to get your scores nice and high and build up your self-esteem.
You may ask why we need to go through this process at all. Well, the reason is simply because low self-esteem can be disastrous to our health - physically and mentally. Many a time low self-worth is the result of conditioning that all children are exposed to. They are taught to put their own needs at the very end. They should ideally think of others first. I am not saying selflessness is bad but when it causes you to disregard yourself, it is ceases to be a virtue. In the right amounts, selflessness keeps you modest and humble.
You may ask how low self-esteem affects you? Low self-value results in despair. You start thinking of yourself as a failure, as an insignificant speck in society. You place everybody else on a pedestal and end up feeling worthless. Consequently, you face dejection and depression, which leads to poor physical and mental health.
You begin to lose your confidence, start neglecting yourself totally. You no longer care how you look. Your working environment seems alien. You lose initiative and miss opportunities. You won't strive to make more money because you don't believe you deserve it (or don't believe you're capable of earning it in the first place). In fact you end up repelling all good things coming your way because of your attitude.
Subsequently, your life gets affected totally - your job, your relationships - basically your entire existence. When you have a low opinion of your self, you will project the same to others who in turn will also hold a low opinion of you. So, it is all in your hands to make a difference to yourself.
It must seem quite negative all that I have said so far but the aim is not to depress you, but to make you aware of the ill effects of low self-esteem.