In order to drive away the evil qualities of attachment, hatred and jealousy, you should develop pure and selfless love devoid of ego. This is real devotion. All other spiritual practices like worship, japa (recitation of a Divine Name) and dhyana (meditation) are merely the steps towards controlling the wavering of your mind. When you want to go on the terrace of your house, you use a ladder. The ladder rests on the ground. But its upper end is supported by the wall. The support of the ground at the lower end of the ladder is faith, and the support of the wall at the upper end of the ladder is love. Therefore, with the help of both love and faith, you can reach any height. Without these two, you cannot climb at all. It is impossible. You should have the support of both. You should have deep faith and sacred love. When you develop these two, there is no need to perform any spiritual practices like japa and dhyana.