No its like being good at any other job.. the proof is in the pudding as they say. Are your kids happy and well adjusted? If yes then chances are you are a good parent. If your parents hate your guts don't trust you and or do lots of dangerous things behind your back then not so much.
No one likes getting disciplined (and if they do then its not working :rofl1
But if the punishment ruins the relationship then, yes its bad parenting. Here a kid can move out no questions asked at 16. So you (not you specifically generic you) come down on your child like a ton of bricks because the kid lied about pot. Child decides you are an unfair tyrant and moves out... how can you parent someone who isn't there for you to influence?
Actions have consequences. But not just for kids, but for parents too.
My dad has a great saying.. Being a parent is a hard job, but a **** easy one to get.