The Dalai Lama is the chief lama. But I'll bet a pair of silk pajamas there aren't any three 'lll' lamas. Meditation is the intentional, conscious cultivation of attention and awareness, often called mindfulness. Developing mindful awareness purifies, illumines and frees the mind. It provides access to a profound sense of oneness, of interconnectedness, of sanity and coherent wholeness.
Meditation enhances powers of observation and sharpens the mind.
It demonstrably brings inner peace, calm, centeredness, enhanced focus, concentration, relaxation, rejuvenation, balance of mind, increased receptivity and acceptance, clarity and deep insight. This is something anyone can benefit from. Anytime is the best time. And one can do it almost anywhere. However, practically speaking, first thing in the morning and last at night are generally found most conducive to spiritual practice.