Not many of you should become teachers, my brothers, for you know that we who teach will be judged with greater strictness.
James 3:1 ESV

You're not likely to be blasted like Nadab and Abihu since the Ark of the Covenant isn't around these days, but if you're going to be a teacher of God's people, then you need to hold yourself to a higher standard than you hold everyone else. You must be harder on yourself, because God will also be harder on you. It will be better for you to self-discipline than to be God-disciplined.