These Shri Ram Mantras too don't need any kind of Guru Diksha and hence are suitable not only for the Mantra Upasaks but also for the lay-persons. - Ashok Mehta
They may seem simple and people will think that how can such a small and simple Mantra help me get rich. For such people, I want to tell you that a Ram Mantra itself is the most powerful Mantra for Moksha Prapti. Shiva himself chants the very simple "Om Shri Ramchandraay Namaha" all the time. People who have been Rama Bhakts since a long time know the miracles of Rama Naam very well. Do not feel hesitant or doubtful by the simplicity of the Mantra, recite it daily and you will see miracles manifest.
1. ॐ रामचंद्र ॐ - Om Ramchandra Om
This Mantra has the ability to boost spirituality and become dear to gods and attract gods. It can be chanted whenever and however one wants there are no bounds
2.ॐ रामभद्र ॐ/ ह्रीं रामभद्र ह्रीं - Om Rambhadra Om/ Hreem Rambhadra Hreem
This Mantra helps to attract positivism in the house and get rid of all kinds of Klesh and Vikaar [strife and illness] from the house. If water is Abhimantrit with this Mantra and sprinkled in the house every morning, articles, electronics, food, and any such material will work efficiently and will not get damaged or break down.
If this Mantra is chanted 4 lac times and food or medicine is Abhimantrit and then eaten, it will give you same benefits as drinking Amrit.
3. क्लीं रामचंद्र क्लीं - Kleem Ramchandra Kleem
This Mantra helps one to become as attractive as Shri Rama. It has to be chanted 10100 times daily for 68 days for getting Siddhi.
4. Mantra for Vaak siddhi: ऐं रामभद्र ऐं /ह्रीं रामभद्र ह्रीं - Aim Rambhadra Aim/ Hreem Rambhadra Hreem
A very powerful mantra for Vaak Siddhi [making the spoken word come true]. It has to be chanted 3000 times for 1 year for gaining very very powerful and complete Vaak Siddhi. The Mantra also brings knowledge and intelligence in the chanter.
5. || श्रीं रामभद्र श्रीं || or ||श्रीं राम श्रीं || - Shreem Rambhadra Shreem or Shreem Ram Shreem
The Mantra Chanting should be done on the 5 Dusks of the days of the festival of Diwali. Start from 5.30 pm on all the 5 days and complete 10000 chants before 9 pm. Use a Tulsi Mala or Kamalghatta Mala for this purpose.