How was "Yir'asecha Kislasecha"?
Rashi: Your end proves about your beginning - your Yir'as Shamayim was folly, and not from a complete Da'as.
Ibn Ezra: Your fear is something you rely on [to guard you]. This is like "va'Yasimu vEi'lokim Kislam." Malbim - your fear was fear of punishment, and not Yir'as Hashem.
Devar Eliyahu: Iyov cursed his day, for he attributed everything to Mazal. Elifaz replied, it does not depend on Mazal at all. All your Bitachon should be on your fear and Avodah. If you were punished, surely you sinned - repent, and Hashem will heal you!
What does the verse teach about "Tikvasecha v'Som Derachecha"?
Rashi: Also they were from folly. Malbim - the purity of your ways was only amidst hope for reward. Therefore, when He brought afflictions and removed your good, you denied Hashgachah and fundamentals of Emunah.
Devar Eliyahu: All your hope should be based on the purity of your ways.
