According to Buddhism, everyone has the potential to experience lasting inner peace and happiness by developing their innate good qualities through meditation. An enlightened being, or Buddha, is simply someone who has developed themselves fully, and now has the skills and means to help others do the same. Since everyone has this potential, everyone will eventually attain the state of enlightenment.
Tantra is the means to do this quickly. In his Tantric teachings Buddha taught how everything begins in our imagination and how we can use positive imagination and wisdom to create our self as an enlightened being living in a pure world. This imagination functions to accelerate this becoming a reality.