After preparing themselves for years, people will normally do special exercises to awaken their Kundalini. There were two very "common" techniques used in the past. The first one was called vase breath technique (kumbhaka in Sanskrit or rlung bumpacan in Tibetan). The other technique is called three locks or bandha traya. Those who were lucky and blessed enough may have gotten their Kundalini awakened after practicing one of these techniques for many years.
However, as the energy released from the Kundalini that has been awakened is so huge and unlimited, they may still experience different problems even though they may have done special preparations for years. So, the Kundalini awakening may not always be a pleasant experience.
Luckily, in this Age of Aquarius, or New Age, spiritual growth can be achieved much easier. As the Kundalini is also one of the most important factors for spiritual growth, Kundalini awakening can also be achieved much easier than in the past. Your Kundalini can be awakened instantly with the help of someone else. This method is called shaktipat and means energy transfer in Sanskrit . In this method someone uses her/his energy to help you awaken your Kundalini.