All you'll be doing is reopening old wounds and re-living the same pain all over again, time after time.
People feel the need to speak about their mistakes, it eases the pain, but you still feel it regardless
Many people would tell their pain/worries to everybody who would listen.
Talk more> Feel more pain> Feel the need to talk more> more pain etc'
I can understand the need to vent, but what does talking so much help you with? How many words of comfort do you need to feel good?
Stop seeking attention
Embrace the pain, learn the lesson you need to learn and move on.
You're stronger than you think.