Naam Japnah is a mechinism to cultivate Gurmat thought process so that we can thrive by living in the Miri/Piri concept. This Gurmat fulcrum-Sehaj can only be attained by this thought process- our fuel that leads us to the Sikhi Marg.
Reference:: Sikh Philosophy Network http://www.sikhphilosophy.net/gurmat-vichaar/18394-naam-japna.html

If Naam Japnah does not create this, then there are a couple of glitches in our mechanisim.
Reference:: Sikh Philosophy Network http://www.sikhphilosophy.net/showthread.php?t=18394

Tejwant