Toddler tantrums!

Briana • Married💍 Mother to JeanCarlo & Mia 💙💖

So my 15 month old was always such a happy, nice baby. But now he is so grumpy all the time!!! He throws a tantrum like ALL THE TIME! Over everything. He yells at us when we tell him what to do. I just don't know what to do anymore. Has anyone else been going through this?