We begin the worship of Mahāgaṇapati with tarpaṇams, (offering of water to the deity). Mahāgaṇapati is located in the Mūlādhāra chakra where the predominant emotion is fear. The next chakra, the Svādhiṣṭhānā is the sexual centre and thus pleasure is the main emotion.
Dissolving fear leads to pleasure. The process of tarpaṇam helps us to let go of our fears, doubts, insecurities and insufficiencies leading us to happiness.
In the spiritual journey we encounter many different types of obstacles. The notion "I am this body" is called Kayaka Malina (impurity associated with the body). It is known as Brahmā granthi and is described as a knot located above the Mūlādhāra cakra. Similarly, "I am this mind and thoughts” is the second type of impurity. This is the Viṣṇu granthi located in Maṇipūra. Finally, "I am the ego" is the last obstacle known as Rudra granthi and located at Ājñā cakra.
Mahāgaṇapati is that power which enables you to overcome and go beyond these three granthis up to the point where you are totally merged with the Cosmos. Till that last point Mahāgaṇapati is going to be there with you, to help you transform yourself from a mouse into an elephant.
Another effective and highly powerful method of invoking the blessings of Mahāgaṇapati is through the worship of His yantra. Yantra pūjā is an important part of the ritualistic worship of deities in the Śrī Vidyā Tradition.
Through the practices of worshipping Mahāgaṇapati, we cultivate strength (physical and spiritual), determination stability, security, and sense of abundance, all of which propel us further on our path.
-GURUJI AMRITANANDA