There are many hurdles in meditation which can be removed if the meditator’s Will Power is strong.
First and foremost hurdle in the path of spirituality and meditation is MAYA.
MAYA creates many illusions in the path of the meditator and tries to stop meditator to reach the ULTIMATE TRUTH WHICH IS GOD.
If person keep trying in spite of MAYA and hurdles, then definitely one day the meditator succeeds and attains NIRVANA/ENLIGHTENMENT/MOKSHA.
Many great Rishis, Monks, Saints faced lot of hurdles to attain the light of God but they all succeeded because they never stopped.
MAYA is so powerful that proper technique of meditation is required in order to defeat it(MAYA).
BHAJANS and MANTRAS are the two great techniques to fight with MAYA and progress in the path of spirituality through meditation.
Good spiritual Bhajans are really good and can liberate the person from all karmic hurdles to attain the ultimate truth which is God.
Recitation of Mantras can be beneficial too. But this way is little more difficult than the techniques of Bhajans as it may initially enter a person into the stage of boredom if mental state of meditator is not balanced or if TRUE GURU has not come in the life of meditator.
At last, I would say that just keep trying to attain the True Light of God and if God likes the meditator then that meditator gets everything in his/her life.
