That there are as many pathways to God as there are people is a fundamental law of Spirituality. So how is it possible to customise spiritual practice?
Spiritual benefits of chanting include the ability to overcome destiny and ancestral problems, elimination of distress, purification of Kundalini centres and many benefits for our spiritual practice.
This article explains the benefit of coordinating chanting the Name of God along with ones breath
One way to reduce our ego is to move from functioning as per one’s own wish to other’s wish and finally as per God’s wish as part of our spiritual practice.
If we use spiritual energy gained through spiritual practice, for example in the form of prayer, to get worldly benefits then the spiritual energy gets depleted.