Well luckily my wife is always on the ball. But I tell them I love them almost everyday. I really hope they will forgive me my chaotic mind. If a child has to get all their sense of value from a single day a year something's very wrong. I get all your points, it's important but not that important.
You're going to die alone and unloved if you're not careful.
If one of your kids said, hey, it’s ok, I love you and your chaotic mind, can you please buy me a card if or when you remember - and it pops into your mind after 10 or 20 or 100 days, or even 5 years later - would you buy them a card or not?