It used to be that you had to make female TV characters perfect so no one would be offended by your 'portrayal' of women. Even when I started out on 'The Office' eight years ago we could write our male characters funny and flawed but not the women. And now thankfully it's completely different.
I think if there's something one needs to change with oneself it doesn't have to happen in the New Year. You can do that any time you please - not that it's not a good inspirational tactic for the people that it works for.