The past was filled with times both good and bad.
Visit it only for brief periods of inspiration and enjoyment. A short time to reflect on moments that make you happy in the present.
Those times in the past that were bad, were really just lessons. Never reflect back on the moments of suffering, but rather reflect on the lessons learned. The lessons that made you wiser and stronger.
Stoic philosophers might reflect on the past to help them appreciate the present.
Do you ruminate on past suffering that only makes you feel bad again? Perhaps it’s time to re-frame the past.