The concept of the Tree of Life gives us a comprehension of different constituents of life. Different branches of the kabbalistic Tree are the different physical and spiritual levels of our existence. And even though the human mind limited by its physical way of seeing things may not be able to perceive all the "branches", Kabbalah seeks various ways to make our existence in the forms of matter and spirit clearer to us. One of this ways is the schematic representation of our life through the Tree of Life.
The Tree of Life is a common token used on Kabbalah talismans. It symbolizes life, growth, development, progress, reincarnation, etc. The Tree is believed to have a healing and rejuvenating ability, and that is why such talismans are often used by rabbis for medical purposes.
Most people, however, wear the talismans for their protective and favorable qualities. How can a talisman with a symbol of the Tree of Life be a potent protection for anyone who wears it? The explanation is very simple. The symbol of the Tree of Life works as a very powerful magnet of positive energies.
The Tree draws good and favorable thoughts, wishes, attitudes and actions from people who surround the wearer of the talisman. This creates a positive aura of prosperity and well-being around the person. The aura in its turn works as a shield against negativeness, evil eye and evil forces. Most authentic talismans that you can find on the market nowadays do not have any useless symbols used only for decoration on them. Every symbol must serve a certain purpose.
Therefore, it is because of the great potency and positive effect of the Tree that many rabbis who create Kabbalah talismans engrave this symbol on their works. The Tree of Life represents all the diverse hues and colors of our existence. It shows how different people can be, like the different branches of the tree. And it unites us by helping us see how closely we are all related and rooted to each other, being the children of the same tree, called Earth.