I was recently asked what makes a good parent. You can fill a library – a thousand libraries – with the possible answers, so I could have gone on about patience, tolerance, a sense of humour, imposing boundaries, being consistent, enjoying the moment, and all those other nuggets of wisdom, if I wasn’t sure that most people already know these things.

Instead, to save you the time and the eye-strain, I can sum up what makes a good parent in just two words: emotional resilience. Everything else stems from that.

I think that society is very confused about what a good parent looks like. The parent with the perfectly behaved, adorable little angel of a child is lauded as ‘good’, while that with the bratty, obnoxious little oik they have to drag out of the supermarket because they’re screaming is judged as ‘bad’. I know, because I have done this myself, inferring the relative merits of the parent from a brief glimpse at the behaviour of their child.

But this is, in fact, a very unreliable method of gauging an individual’s parenting ability, because all kids are different – some are easy, most are a mixture of tranquil and testing, and some are right little bastards who, in an earlier generation, would have been destined for birch and borstal. It’s not so much the behaviour of the child but the behaviour of the parent that reveals their abilities or otherwise.

You see, being a good parent isn’t about succeeding when things are going well, the toddler’s perfectly happy and everything is hunky-dory – those are the times to sit back, relax and bask in the glow of strangers who deem you the very model of a perfect parent.

No, the real test of your parenting prowess is what you do, and how well you cope, when things are going horribly, horribly wrong, the little one is screaming fit to burst her lungs, and you want nothing more than to run away, find a dark place where you can curl into a ball, and hide away as you ride out the storm. That’s when you discover whether you’re a good parent or not, and that’s when you find whether you have the strength to rise up in the face of adversity – or not, as the case may be.

Being a parent, you’re tested every day. What your toddler loves to eat on Monday she decides is vomit on Tuesday, no matter how long it took you to make. At home on Wednesday she’s as good as gold while on Thursday at the restaurant she behaves so badly you have to leave early in defeat. And on Friday she’s using the potty like a pro, but on Saturday pisses on the sofa and then craps on your shoe, and she’s so upset, you break your heart trying to console her.

The hours of crying, the thrown toys, the irritating whining, the tiredness, the dressing and redressing, the bathing and washing, the repetitive game playing, the incessant highs and lows and successes and failures, the constant battle of wills and the endless sacrificing of your own hunger, thirst, wants, needs, dreams – it is so difficult not to be affected by all that, not to get run down.

That’s what I mean by emotional resilience. If you want to be a good parent, want to keep going in the same calm, controlled, reliable fashion you’ve done from the start, you have to find a way of protecting your emotions, shutting off a part of yourself, so as not to become overwhelmed. If you let things get to you, if they weigh heavy on your heart, you’re never going to make it.

As I said before, emotional resilience is pretty much all you need to be a good parent, because it is the foundation of everything. Nobody sets out to be a bad parent – nobody decides they want to lose their temper at their kids, shout at them, hit them, make them cry; nobody thinks one day they’ll start to ignore their child, sit them in front of the TV, dump them with family and child minders and start hiding at work; nobody plans to simply give up and overlook their child’s bad behaviour because they can’t deal with it, or give them the chocolate bar because it’s easier than arguing, or leave them in nappies till they’re five because it’s just too hard – but I’m sure we’ve all seen examples of these behaviours.

Hell, I went to a fair yesterday, and I saw most of them – parents losing control and swearing at their kids, parents looking the other way as their kids misbehaved, parents buying things for the kids to stop them whining – anything for an easy life. I don’t believe these parents started out this way. I don’t believe they ever thought they’d be like this. But somewhere along the way, they’ve become so run down by being parents that they’re just trying to survive – and good parenting has gone out the window.

In the grand scheme of things, it doesn’t really matter if your child is well behaved or not. In the grand scheme of things, all your mistakes as a parent, all your failures, aren’t anywhere near as important as you think they are. What’s important is that you never stop trying to be a good parent; that you persevere, no matter how difficult; and that despite wanting to run away, or give in, or give up, you don’t, don’t, don’t. That’s the only way you can be a good parent. And ultimately, your child will be all the better for it.