Dealing-With-Toddler-Terrible-Twos

The terrible twos don’t necessarily happen right when your child turns 2. The terrible twos generally begin anywhere from 18 to 30 months of age, and, despite what the name says, can last well into the third year of life. Here are some tips on how to manage your toddler during the terrible twos!
Keep regular meal and sleep schedules.
Praise behaviors you approve of and ignore ones you want to discourage.
Keep rules simple and offer brief explanations.
Don’t give in.
Stay calm.

And yes, it's way easier said than done but these tips might help! And there are more than just these few, you can find them here