Gratitude…………an astonishing beautiful explanation from a verse in JOB

I saw an astonishing beautiful explanation of this verse From Rav Arush [his own interpretation?]
In his book Gratitude -translated in various languages from the Hebrew he suggest strongly that we should “in advance” thank God for all the good he is going to do for us, and at the same time believe that everything is for the good [as Chazal says]

Who hath given Me anything beforehand, that I should repay him?
Says Rav Arush[using from memory my own words]: this person [the one who give thanks in advance] has indeed proceeded me [by thanking me in advance]…….should I not repay him!!??