With the hectic pace and demands of contemporary life, many people feel stressed and over-worked. It often feels like there is just not enough time in the day to get everything done. Stress and tiredness make us unhappy, impatient, frustrated and affect our health. We are often so busy we feel there is no time to meditate. But meditation actually gives you more time by making your mind calmer and more focused. Fifteen minutes of meditation before going to sleep every night can help you to overcome your stress and find inner peace and balance. After four weeks of daily meditation you will notice that it is easier to control your emotions.
Meditation can also help us to understand our own mind. We can learn how to transform our thoughts from negative to positive, from disturbed to peaceful, from unhappy to happy. As we go deeper and deeper inside, we discover amazing universes within. Meditation is a spiritual practice that has been utilized for personal growth by many cultures throughout the ages, though most people today associate it with Buddhism. Buddhism is not a religion, but a science of happiness. Buddha taught that all human beings are Divine.
Perhaps the best guide to meditation is a book by Tara Brach, "Radical Acceptance: Embracing Your Life With the Heart of a Buddha". It allows you to explore several types of meditation to find out which one do you like best.
Jack Kornfield's book A Path With a Heart: A Guide Through the Perils and Promises of Spiritual Life" is a great resource to learn what happens as we deepen our meditation practice - it is a truly amazing book and a great encouragement to start meditating.
I practice Transcendental Meditation, which happens to have significant amount of scientific research backing its benefits. However, unlike other meditation methods, it requires a teacher to give you a mantra and to guide you through various stages of spiritual progress (so unfortunately it's not free to learn).