Among the teachings of the Buddha is the fact that attachment, or the desire to hold one to something or something creates feelings of want and insecurity. He also preached that the inability to let go was one of the greatest causes of human suffering.
Non-attachment can give one the freedom to progress towards positivity and oneness with oneself. A sense of impermanence is important in order to let go. If we take a close look at our problems, we will see that our attachment to people, ideas and opinions are directly or indirectly responsible for our sufferings.