Catrina, you should perhaps be grateful that you can't recognise this for what it is. The OP most definitely is being emotionally abused.
He has always corrected me on things but now it seems like everything I do is wrong. He even criticised how I ironed a pillow case. Every thing I tell him he knows better than me or I must be in the wrong and he tries and proves me wrong...
....He has always corrected me on everything. To the point where other people point it out. Not necessarily in a critical way but more in an assuming I'm wrong kind of way...
...I have told him lots of times that I don't like that he corrects me constantly and he does apologise and say that he will change.
Constant criticism, humiliation in front of others, invalidation and having the life sucked out of you by pointless arguments is emotional abuse, and it is followed by hoovering (the apology designed to suck the OP back in and make her hope for change).
She can't win for losing here. Damned if she does and damned if she doesn't. This is 100% emotional abuse and will result in anxiety, trauma, insecurity and even depression.
OP, you should also order and read 'Living With the Dominator' by Pat Craven www.amazon.co.uk/d/Books/Living-Dominator-Pat-Craven/1477410597?tag=mumsnetforum-21
Hopefully, if you read both the Bancroft book and this one you will see that your P is just the same as thousands of other losers - there is nothing special or unique about him - and also that there is nothing you did that caused this and nothing you can do to change it or cure it. The only person who can change anything about your life is you.
Don't be the mother of three who wonders how she can get her children away from a father who belittles and humiliates their mother after seeing her children starting to mimic his behaviour or show signs of serious anxiety around him.