Feeling unequipped. I feel as if I've never had to parent until now

My little boy just turned 3 and he's always been an exceedingly gentle and kind child. I mean, he's mischievous and cheeky, but he's so laidback that I've never really had any situations outside of early sleep stuff where I've felt like losing my cool. For example, if he wants a treat and I say, "not right now", the vast majority of the time he says just says "ok" and moves on. It's just always been pretty easy.We've just had our second child (5 weeks old) and, whilst the 3 year old is absolutely besotted with his little brother, he's started acting out in other areas.The acting out is fine, I expected it and it's standard stuff like he won't go to bed and keeps sneaking down the hall. Not huge, but something we've never had in the past.The problem is myself. I feel completely unequipped. I feel as if, because he's always more or less done what's asked of him, I haven't had any practise in actual parenting.I know this sounds strange, and it's a little embarrassing to say but, what the hell do you do when a 3 year old won't do what he's asked? via /r/Parenting https://ift.tt/2Gli8A6