Noble Eightfold Path
Gautama the Buddha

The Noble Eightfold Path, described by Guatama the Buddha in the 5th century BCE, is consisted of eight practices, forming the path liberating from suffering and leading to true peace. It's based upon cultivating moral virtue, building mental strength through meditation, and developing insight & wisdom.

As described in Wikipedia:

Right View
Our actions have consequences, death is not the end, and our actions and beliefs have consequences after death. The Buddha followed and taught a successful path out of this world and the other world (heaven and underworld/hell). Later on, Right View came to include karma and rebirth explicitly and the importance of the Four Noble Truths when "insight" became central to Buddhist soteriology.

Right Resolve or Intention
The giving up of home and adopting the life of a religious mendicant in order to follow the path; this concept aims at peaceful renunciation into an environment of non-sensuality, non-ill-will (to loving kindness), away from cruelty (to compassion). Such an environment aids contemplation of impermanence, suffering, and non-Self.

Right Speech
No lying, no rude speech, no telling one person what another says about him to cause discord or harm their relationship.

Right Conduct or Action
No killing or injuring, no taking what is not given, no sexual misconduct, no material desires.

Right Livelihood
No trading in weapons, living beings, meat, liquor, and poisons.

Right Effort
Preventing the arising of unwholesome states and generating wholesome states, the bojjhagā (Seven Factors of Awakening). 

Right Mindfulness
"Retention," being mindful of the dhammas ("teachings," "elements") that are beneficial to the Buddhist path. In the vipassana movement, Sati is interpreted as "bare attention": never be absent minded, being conscious of what one is doing; this encourages the awareness of the impermanence of body, feeling, and mind, as well as to experience the five aggregates (skandhas), the five hindrances, the four True Realities and seven factors of awakening.

Right Concentration
Practicing four stages of meditation. In the Theravada tradition and the Vipassana movement, this is interpreted as one-pointedness of the mind and supplemented with Vipassana meditation, which aims at insight.