I can relate to that. Once in a while though brain decides that the memory it wants to draw attention to is a pleasant one, so it ain't all bad for me. However, most of the memories I dwell on are ones that bring guilt/shame.An exercise I am still working through, is dealing with past events that otherwise linger, with their associated emotions still raw. I remember isolated incidents, even some as a child, with acute guilt/embarrassment/shame and they'll often come back to haunt me as I try to fall asleep, or will be there at 3am ready to shame me.
In some cases I've been able to take active steps, like speaking to the person involved. Almost inevitably, they have either no memory or just a vague recall, and so are puzzled why I've raised it. Typically I'll lie by saying it had 'popped into my head' rather than saying 'Don't you realise this has been keeping me awake for weeks, making my heart race and breaking me into a sweat?'!!! It feels like my brain can then close the case, push the drawer closed .... and then find something else to worry about.
Forgetfulness can be a blessing, but somehow my brain takes a delight in finding an old memory, then rushing up like a child demanding attention 'look, look, look!'![]()