LE - We all have things we don't like about ourselves and it's good to recognise them. I was a bore during my marriage as I became just a person in a marriage and lost myself. Through DBing I've found myself again, I'm the person I was when I met my W, not that person I became from living with my W who I realise now, I did not like.
Take time out, breath, try and remember the things you loved as a kid, your dreams etc as they have just been put on hold for a while. Now time to live them and be the best dad and try and help your kids become the best people possible.
We are always learning, but I think we get trapped in situations sometimes and before we know it, that situation has engulfed us. This is a chance to get out of that, either through D, or by the changes you make to be a better you that will help you and your W have a better relationship and life together if she (and you for that matter) choose to.
Have a great weekend buddy, started mine last night and got another 2 days to go yet...oops