These mystics gave more authority and weight to keeping the codes of the Torah Mystical Jews also developed a type of prayer called the Kavannah. Its purpose was for concentration on the final redemption. Hebrews have had a longstanding mystical tradition that has helped shape Judaism and give it most of its codes of laws and rules of observances. While most mystical experiences focus on meditation, Jewish mysticism focuses on studying the Torah to gain insight and a mystical experience towards God. Sufis had a concept of fana that stated that one must try to annihilate the self.
Obstacles are primarily from one's self or ego.
Sufism emphasizes the struggle to overcome the dominance of one's desires. A struggle that involves choosing at each moment to remember and surrender actively to Allah. I had followed the way of the prayer carpet and the mosque with all sincerity and effort. I wrote the marks of asceticism to increase my good works. Let not your heart tremble before the blows of My sword.