A Inner Thought

I often find myself contemplating therapy,
So hung up about the past, getting it out Into poetry.
Running the replay over and over,
Only to realise its too late it's already past.
Can't be the only one with this problem, what's wrong with me.
Constant scrutiny about the reason why we couldn't be 'we'.
Thinking about specific details from random events,
pointless in hindsight yet I still replay, just to vent.
Therapy, could it be the key to diagnose me.
Is it normal to be this hung up about history?