By putting Bhagawat Gita on head, and in house or by not beleiving in and hating it simply no one can get MOKSHA.
Can any one become a successfull Doctor or Engineer simply if they are students in a particular college, and purchase some books then do nothing.
Practice makes man perfect. One need to read, properly understand, digest, follow and practice it in it's true spirit what is said in Bhagawat Gita. Then it can lead us to the path of MOKSHA.
Wanting and trying to get MOKSHA also involve desire in it. When this also get burned within our soul, we may attain MOKSHA, but only after passing several examinations which god pose before us to test our eligibility.
Simply some one cannot get MOKSHA without undergoing through and passing at the other pre-required stages, necessary in the life cycle.
1. Dharma
2. Ardha
3. Kama
4. MOKSHA
Without undergoing through first 3 the 4th one is not possible. When some one pass with excellency in the first 3, then only they get 4th one.