We can learn and profit from our past history. It's in the Bible, I Corinthians 10:11, TLB. "All these things happened to them as examples—as object lessons to us—to warn us against doing the same things; they were written down so that we could read about them and learn from them in these last days as the world nears its end."
Don't live in the past. It's in the Bible, Philippians 3:13, NIV. "But one thing I do: Forgetting what is behind and straining toward what is ahead, I press on toward the goal to win the prize for which God has called me heavenward in Christ Jesus."