God loves to shower blessings on His great creation. Just as an earthly father wants to give the best to his children, knowing they are not perfect; so does our heavenly Father. His goodness to us is not dependent upon us, or our good works.
This favor of God is something that we can't possess on our own. It can't be bought nor can it be sold. God's favor is freely given to mankind, flowing unto the just and the unjust. We could never work hard enough to earn the favor of God.
Therefore; we can't take credit for our life, in the blessed and favored seasons; knowing that it's not based on anything that we have done. Likewise, we accept our life during the difficult seasons, also, knowing that it is not based on anything we have done.
We thank God, in every season, He is still a loving Father, desirous to grow us during each season.