The joy and happiness of the Supreme Bliss, Sath - Chith - Ananda can be attained through concentration and meditation. There is no happiness higher than this.
Peace of mind results in concentration, which is the basis of meditation. The presence of divinity in the heart is the best object for meditation.
The Lord says in the Gita: "Among things profound I am "Silence". Observing silence leads to meditation in depth which will verily give a vision of the Lord to the devotee. Concentrate with silence on the magnificence of the creator.
Fill the hearts with frindliness rather than with enmity. Develop love of international brotherhood and establish world peace. Deep meditation leads to intuition and helps to attain and oceanic calmness of mind. Hence Meditation is the basis of all attainments.