The great mantra is Om Namo Narayanaya, which is eight words (astakshari) mantra. Pray this mantra 108 times every day in north direction. It is the best remedies for all our problems.
This mantra also will provide freedom from life and death journeys(moksha).
Each count of this mantra has different benefits.
1 lak – It will clense our thoughts.
2 laks – It will give Mantra sidhi.
3 laks – It will provide heaven based on our karmas.
4 laks – It will give an opportunity to see the lord Vishnu.
5 laks – It will increase our concentration and success.
6 laks – It will give Divine Knowledge.
7 laks – It will give Self Knowledge.
8 laks – It will give liberation(Moksha).
