"I woke up hearing knocking on the glass. At first, I thought it was the window until I heard it come from the mirror again."

Dust yourself off and try again!

"And if at first your don't succeed, then dust yourself off and try again!"
- Aaliyah 

This is a line in the song called "Try Again" by the late R&B singer, Aaliyah. We were taught to be always right or else we are considered no good. However, let's bear in mind that an expert was once a beginner and he had failed a few times before getting it right. So, you too can be an expert as long as you continue and never quit! If you fail at first and probably a few more times; then dust yourself off and try again!