SESIRAO mai ! plz no respect and pranams to me, you're older to me... so all respect and pranams in your feet. The mantra listed above will take just 5-10 minutes... no other mantra can parallel it in spontaneous meditation ( i.e without one's effort ) it will bring in just everything to have you progress forward. so do just 10 minutes morning and 10 minutes evening...
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As you have paid so much respect and pranam , i have to pay you back everything mother which i always be lack of... so accept my humble few things for you....
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1. for your children to excel in education
i know it's difficult to put your boys to do japa in morning and evening and so on... so let me put forward a secret method given by my sadgurudev... mantra is "aim" ( saraswati mantra ) . Procedure is to make your boys/girls to repeat it verbally ( it should be audible ) continuously when they go to bed in night... laid in bed as usual, repeating the mantra just by mouth ( no mala or anything ) till they themselves fall asleep by themselves in few minutes...
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Results - Your child will be counted in for 6 hours ( sleep time) of sadhana, the first syllable of sound which will affect them in the morning will be 'aim'... in few days, the mantra will protect them in dreams and they will be super able to grasp things... and last of all, doing such a thing would keep a mystical smile in heart all day long...
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2. You can try ( in same method above ) the mantra 'shree' for money , 'bam' to be disease free, 'gam' to remove your obstacles... etc etc.
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last of all, it takes effort to write things for you, but the motherly love and affection from you is my concern mother... you will need not do any homam or anything , be your own care taker... the dattatreya mantra is a super gift to you...
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I knw SRK ( Shri Ramakrishna paramhansa ji ) is kali maa's devotee... and in other to have vision of him, you need not to try kali mantra or any kali mantra by yourself in that sleep manner i told above because kali is a very fierce and fast acting one... there are certain precautions to be maintained in order to deal with it... for eg - if u go out of my advice and turn on to do it and somehow desire-related act happens between you and your husband, the kali maa's shakti enveloping you might get fierce... and results will be a total havoc that you cant hear them from my side maa about the people who have gone into such mistakes... so tc ! so follow a safe path... the dattatreya mantra will lead you to just any deity in the safest manner.. may it be maa kali or shri ramkrishna paramhansa... SRK ji will come on earthly plane as promised... i'll luk further to reply the exact year... i have a busy schedule.