answers and beyonds

What are the do’s and don’ts to perform Japa of the mantra given by the Guru? Can it be chanted all times, irrespective of the location and dress code (i.e. in office attire wearing shoes etc.)?

The “Rama” Nama and Mahamantra have no rules. You can chant it any number of times, any place, any time of the day and in any state.
Other mantras may have their own restrictions and have to be chanted as instructed by the Guru.

I have heard that it is necessary to have a Guru initiate one into the Mantra, without which chanting of any mantra is futile. How true is it?

For any mantra, a Guru is a must. For Rama Nama and the Mahamantra, you can start chanting even without a Guru. When you are accepted by a Guru, you can take formal initiation from him and continue. For all other mantras, one can recite it only after proper initiation.

When I chant any Mantra, some thoughts run in the back of my mind simultaneously. The moment I realize this happening, the thoughts cease and Japa seems to resume. Now, who is chanting the Mantra and who gets the thoughts? Are both one and the same person?

When the force of air is mild, we call it breeze. When it blows with great force, we call it a storm. In the same way, when the mind imagines, it is called ‘manas’. When it thinks, it is called ‘intellect’.
It is the same person who chants the Mantra as well as gets those thoughts. The phenomenon that you experience is because of the fact that the mind operates at different levels.
It is also the same reason why people perform acts like ‘ashtavadanam’ (performing eight non-connected activities at the same time) etc.

Is both meditation upon self and chanting the name of Krishna/Rama or Ganesha produce the same effect?

Chanting continuously in the mind, without a gap of even a microsecond – that is meditation.

Can we chant mantras like ‘Om Namo Narayana’ etc. in the place of Maha Mantra? What impact does it make on our spiritual life?

You can chant any Divine Name of the Lord.
Each Mantra has its own merits and demerits The Maha Mantra has been prescribed in the Shastras as t he means of liberation in this Yuga.
When you chant a mantra, it reverberates with the cosmic and energizes it.
Many Mahans and saints including Sri Chaitanya Maha Prabhu and all his devotees have chanted the Maha Mantra and are still chanting it till date, all over the world. Hence the cosmic is filled with the power of this Name. Thus, by chanting this Mantra, one gets to see the results very soon.
In addition to being a Mantra, this is also a Nama. So, there are absolutely no restrictions to chant this Nama.
That is why Maha Mantra is advocated for liberation.

From whom can one take initiation? Is initiation taken only after marriage?

Initiation should be taken from someone who has attained siddhi in that particular mantra. There is no relationship between initiation and marriage.

Sometimes I start chanting or writing the Mantras without taking bath. Is this allowed? How do I quit this habit?

If you are chanting the Mahamantra, it is harmless. You are not allowed to chant the other Mantras without taking bath. Instead of changing your bathing habit, change over to the Mahamantra. That will prove good for you.

Is chanting while doing work considered as meaningful chanting ? Since most of the days , I am continuously doing house chores one after the other, I don’t get time to sit and do ‘Japa’. But if we chant while doing house chores, does it have same effect ?

Yes. It is definitely great. The Gopis did exactly that way.

Although I have been initiated into the Mahamantra, is it okay if I also chant other Divine Names sometimes like Rama Nama or Arunachala Siva? Or should I chant only the Mahamantra?

The Mantra initiated by the Guru contains a special power. That is the reason why it is recommended that one chant it incessantly. That being said, there is absolutely nothing wrong in chanting any Divine Name of God.

What is the experience connected with chanting Mantras? When does one get mantra siddhi?

Each Mantra has its own Siddhi. One is said to attain Mantra Siddhi when he is able to see the deity pertaining to his Mantra, by incessant chanting of the Mantra.