Guide to being a good ruler

Stop being a jerk of a ruler it really helps. I'm going on over 200 years in my latest game without any rebellion at all and most games I only have one during the Short Reign period if at all.

Raising your heir

Raising your vassalsKeeping down the malusAssigning HoldingsYour HoldingsDealing with upset vassalsShort Reign PeriodRunning your kingdom When it all goes wrong