soham is not the only word. There are 54 words available. described in srichakra. these are all should be used in combination or as single one depend upon your mental and body condition.
Mantras are wont work for all . It should be chosen depend upon the above said condition. One worked for one person no need that will work for another. Experience differ person to person.
Some will have vision
some will get changes in body
some will get intution answer
some will get body pain
Some cases may lead to evil also.
some time lead to mental upset
try correct one
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