If you are longing for a return to the "good old days" and your mind is preoccupied with that thinking, you will miss the goodness of God that is being poured out in this season of human history.
Only God is good - not our seasons of life. Ask a person of color if the 1950's were good for them. Ask a woman who had others define for her how her life should be lived if those really were the good old days. The past is typically defined as "good" by those who were in power at the time the definition was crafted. We assign our limited definition of goodness to what we can understand and control. This puts God in the box of human reasoning and imprisons our thinking. We become suspicious of anything new because our understanding is anchored in the past. Those who live in this intellectual and spiritual enclosure can spend the rest of their lives mourning for a return of something that no longer exists. For those held in this way of thinking opportunity and possibilities will pass them by because they are no longer reaching for anything new.
The writer of Proverbs said, "the path of the righteous is like the light of dawn that grows brighter and brighter until the full day." This Kingdom principle, of increasing light and revelation, is why we need to be reminded that each new season of life carries with it something fresh and good that God is doing in the earth. This understanding will free us from living in the past and allow us to embrace our developing future.