This is the fundamental mistake that so many people make about the Bible that they think it has the least bit to do with conquering anything in this world. The entire Bible is about the soul returning to its source, God, which is where the soul will ultimately find peace. The correct interpretation of the psalm he is quoting would be that a person needs to develop the strength to control his own mind from going towards the things of this world and to still his thoughts as the prelude to Union with God and ultimate peace. Alan Dershowitz is the last person that Jews should be listening to.

Hint: They are ALL sexually depraved orgy whores for Satan's den of vipers!