Our Power or God’s Power of Preservation? (1 Peter 1:3-9 (COD Head 5 Article 3)

We might think that this notion of the preservation and perseverance of the saints is unique to the Apostle Paul.  We might also think that this is not all that significant in terms of our psychology or encouraging us through difficult times in this life. In fact, we might think that that knowing God will preserver us waters down the struggle or the hardship of this life.  It sounds like life is not that challenging because God will just continue to pull the puppet strings.   So, what does a Calvinist say about such a claim that Reformed Theology minimizing suffering?