Strides on to thread brandishing quiche fish in a threatening manner.
Right listen up ladies, gent(s) and lurkers, I'm only going to say this once. Trying CIO in desperation after nights and nights without sleep, shouting at your child, putting them in their cot when you just can't take any more, feeling fed up with them when you repeat yourself for the umpteenth time, forgetting to comb their hair before school, being grumpy when they knock something over... None of these things make you a bad parent, they just make you a parent. We're all human and we all make mistakes. All we can do is apologise, make it up to our children, and try and learn from our mistakes.
Love them, hug them, kiss them, tickle them. Read them stories, tell them about the world. Let them get messy sometimes. Provide them with discipline when they're naughty, comfort when they're suffering, an appreciative audience when they're performing and most of all show them you love them. And make that the backdrop against which the occasional 'bad parent' slip-up is a tiny thing. One bad day does not make you a bad parent so no more beating yourself up about it. Come on here, tell us what happened and then forgive yourself.