So much to think about! Thanks for taking the time to reply.
To answer some questions, my family life and example relationships were great, functional, equal, happy (at least they seemed to be). Interestingly, my mum is the only person who can see DH's perfectionist nature and calls him on it, telling him to relax, sit down whatever, and he doesn't argue. I don't know why this is but although she doesn't know the full extent of his nature it is nice to have someone fighting my corner occasionally.
His parents are lovely and have a relationship that, after nearly 50 years, obviously works for them. However his dad speaks to his mum in the most dismissive way, wont let her help with the washing up not because he is doing it out of kindness but because he knows she can't do it right. I hate the way DH's dad speaks to DH's mum sometimes and was determined not to allow that to happen to me, so I'm not sure how it has. He is really rude to his mum, to the extent that she offered to come and stay with us after DC2 was born but in her words, 'I would be more of a hindrance than a help as DH wants things done a certain way and I know you would end up doing everything anyway'. It made me really sad she felt so unwelcome.
DH is indeed a perfectionist and it makes him very unhappy. He says he wants to spend more time with the kids and yet when he gets in from work, always wants half an hour to himself to unwind. I have tried to gently suggest that this half hour might be better spent with DC and then unwinding when they have gone to bed but he can't see the wood for the trees, can't think that delaying his 'relaxing' might actually make him feel more relaxed as he gets more time doing what he claims to want to do.
My friends would describe me as self confident, no nonsense, capable. I am not sure why I walk on eggshells around him, I certainly don't with other people. I am exhausted though from having spent so long trying to make him happy, because I really do want him to be happy, we had some real fun together in the beginning and he deserves to be happy, but I am coming to the realisation that I might not be able to and that makes me sad.
If someone came on to a thread and said that their DH had 'told' them to tidy up, complained that their dinner wasn't made, 'reminded' them on mother's day that shirts needed ironing so maybe it would be prudent to do them asap instead of going out as a family/relaxing in the evening, I would advise them to tell him to fuck off. Which is where I can't believe I haven't said this to him. Well, I have in the past and it has made a slight difference for a short time but we always end up worse than before. So I have tried but it didn't make things better and I think I have given up.
Apologies, trying to give the background that pp have asked for. It is good for me just to get these things out so thanks.