Does anyone else ever change and look back at something they have done and can't believe that they did it? I mean, it's kind of like I have several personalities, though they all answer to the same name and have the same past they react distinctly different to situations. One day I'll laugh at what another day I will lose my temper over. The worst part is when I do something thinking I'm being completely rational and justified and then a few days later I'll realise that the 'jerk' who had a go at me or said I wasn't being fair or something similar was actually in the right and I can't fathom why I would have imagined that the things I said or did were justifiable... I've actually burnt bridges and hurt people I've cared about like this. At the time I feel they are hurting me and later I realise that the only pain I feel is the shame and guilt for the way that I acted. Unfortunately it's not always possible to apologise - you can't undo the past... So am I alone in this? Do others also shift and change, reacting one way on a certain day and then days later (or it could be as short as hours later) realise that you have no idea why you would act in such a way?