Sometimes i don't know what i want to say.

Sometimes i don't know what i want to say. There are some times when i felt like sh*t and my brain just stops working. I don't know what to say, how to express. My brain become so unstable that i can't even construct appropriate words and sentence to myself. Its so frustrating. Just like a stone age person saying unga bunga things. Now, this situation arises when my mood was completely off and i stuttered a lot in front of people during whole day.