Here's a preview of Ecclesiastes 7 (I got mixed up and did Chapter 7 today instead of Chapter 6).

Say not, "Why were the former days better than these?" For it is not from wisdom that you ask this. (Ecclesiastes 7:10 ; ESV)

This verse reminds me of my mom telling me as far back as I can remember, "There were no good old days. The old days were hard and painful and sad." Be grateful that you live in the good old days. It also reminds me of this old Carly Simon song - the lyrics are very Ecclesiastes:

We can never know about the days to come, but we think about them anyway...