I've always struggled with overthinking and negative thinking. I separated from my ex almost a year ago in Feb, after a horrendous Christmas 2022. We had been together for 14 yrs, 12 of those living together, with 50/50 split of his 2 kids from his previous marriage (they are now aged 20 and 19), and our own daughter is now 10 yrs. I had gone into the relationship feeling positive about being a step parent, but the dynamics just never really worked and as the 2 step kids got older things just seemed to get worse. And my relationship with my ex got more strained, finally he said he wanted to split up. Our daughter lives mostly with me but sees him as much as is practical (about 2 nights a week) as he lives in a different city. Now that 2023 is drawing to a close I feel like I've spent the whole year dissecting my own part in this failed relationship, analysing the reasons my step kids are not ok with me etc. I feel paralysed in this self flagellation! How to move on? How to stop blaming myself? How long does it take?