What is the difference between concentration and mindfulness meditation, and how do they each contribute to achieving spiritual mastery?

Concentration meditation and mindfulness meditation are two common types of meditation that differ in their focus and technique, but can both contribute to achieving spiritual mastery. Concentration meditation involves focusing one's attention on a specific object or thought, such as a mantra, a candle flame, or the breath. The goal is to develop a one-pointed focus and sustain it for an extended period of time, which can help to develop mental clarity and discipline. By reducing distractions and quieting the mind, concentration meditation can help ....