The attitude of an aspirant plays an important role on Mantra recitation & worship. Mantra is energy. It can be used for either good or bad purposes. One can compare this with Fire - which is pure energy; it can cook our food to sustain us and nourishes us. It can also burn us and kill us.
If a Sadhak (devotee) is proactive in mantra recitation for personal spiritual growth, it helps him/her to evolve, but if the mantra is practiced to help others, it serves a double purpose. It helps both the persons for whom mantra is recited and it also helps the person, who is reciting the mantra. On the other hand, if the mantra is used to harm somebody, the person who recites it will also not escape the harmful effects of the mantra. So it is important for an inspiring mantra worshipper to understand the prerequisites and requisites of mantra worship.
Prerequisites of Mantra Sadhana
Guru - Spiritual guide
Diksha - Initiation given by teacher to student
Abhishek - Special rites of eight types given by teacher to student at initiation