And ultimately remember that they do grow out of it eventually.
My older children were absolutely hideous from 12 months - 3 years with throw-down screaming temper tantrums, and other charming little traits. Despite my using every trick in the book - I am an early childhood teacher so my bag of tricks is quite large! - I finally realised that the magic trick is age.
They all will, eventually, calm down and become reasonable.
But, some kids ARE tougher than others, just like some pregnancies and births are more difficult than others so don't beat yourself out if JoJo's failproof method fails... Just keep on plugging on...
Good luck, try and be consistent in whatever method you choose, and just remember that this too will pass.
(And I have a feral 15 month old so I feel your pain...)