Every soul in this world is incessantly seeking bliss, and every action the soul performs, is with the intention of attaining that bliss. It is no surprise that the mundane experience of life confirms that man has not received even an iota of that supreme bliss. The happiness that we receive in the world is not true because it is transitory in nature. In fact worldly happiness decreases with time and often becomes painful. Therefore the soul continues its everlasting quest for happiness and yet seems to have reached nowhere.
The Vedas reveal that the soul is divine in nature and a part of God. Since God is the ocean of bliss, the soul is drawn toward bliss. Understand this through the analogy of rivers which are created from the water vapor that rose from the ocean, and then formed into clouds and rained back on earth. The rivers naturally flow toward the ocean, which is their source. In the same way, the soul is naturally attracted toward its source, which is God. Therefore, it is the intrinsic nature of every soul to desire happiness. This nature can only be satisfied when the soul attains the infinite bliss of God. Hence, knowingly or unknowingly, every soul is struggling to reach that state of divine consciousness, or Yog which means ‘Union with God’.