Lord Ganesha is the remover of obstacles and is often called Vighnaharta. One of the major deities in Hinduism, Ganesha ji is worshipped before any major or important beginning in life—be it marriage, a new house, business, childbirth, etc. The elephant head of Ganesha ji symbolizes knowledge and wisdom. Here is the Ganesha Naam Mantra:
Om Shree Ganeshaya Namah
ॐ श्री गणेशाय नमः
Om Shree Ganeshaya Namah is a popular Ganesha mantra to pray to the god for prosperity, wisdom, and removal of obstacles in life. Students who wish to become better at studying are often told to pray to Lord Ganesha, as the lord blesses them with focus and knowledge. Om Shree Ganeshaya Namah can be chanted by anyone as it is a naam mantra.