Most of us do not understand why we have the kind of life that we are living, or, what is our destiny or future. The truth is that we are born to act freely and make our own choices.
There is a plethora of societal influences, trends, spiritual urges and beliefs and astrological pulls and so on. We have our own attitudes, beliefs and way of acting. These features of our nature and personality shape our future which is routinely called destiny. To illustrate the point further, we are born with a freedom to act. We are free to commit forgery and be arrested and penalized for it. We can also do good deeds and can be treated as heroes.
When we are asked to select a card either by shuffling the deck or by selecting one from a series, our choice is, in fact, unconsciously guided by the psychic photograph of the card that is part of our subconscious personality at that moment. Our mind and nature is revealed by the choice of the card that we make at that particular moment without actually being aware of it. The tarot reader tries to predict your destiny by your choice of the card as it reflects your nature and personality that in turn determine your future.
It may occur that you have made some changes in your thoughts, beliefs, behavioral pattern or trends. In that case you will choose a card that symbolizes your direction at that moment. This is the reason why tarot reading can deliver a significant judgment or overview of the possibilities and probabilities in choices which indicate an appropriate course of action.