Reddit reviews Incredible Years: A Troubleshooting Guide for Parents of Children Aged 3 to 8

At this age this is just how it is, discipline is mainly redirecting, they have literally zero impulse control at 16 months and the fact that you're getting angry shows me that you have age inappropriate expectations.

Th highest rated comment has good advice, but not for a 16 months old child, there's a huge difference cognitively between 16 and 24 months.

But if you want to learn about child development and age appropriate discipline I recommend this book which came recommended to me by a family therapist when I had trouble with my daughter and I think it's an awesome book and how to parenting guide.