Meditation must be the core of our practice. From the very first moment we realize the necessity of embarking upon the spiritual path toward freedom from samsara, until the end of that spiritual path when liberation has been attained, meditation must never be set aside. No other practice will produce the end result of enlightenment, and all other practices or endeavors, whether spiritual or mundane, will benefit from a regular practice of meditation. All meditators, from beginning our practice of meditation until the time we reach enlightenment, should practice shamatha meditation.
From Stillness, Insight, and Emptiness: Buddhist Meditation from the Ground Up by Lama Dudjom Dorjee, page 37