There's nothing better than getting advice from professionals in our desired field. Sometimes it's even important to get advice from something that doesn't involve our field at all.
This is the case with this snippet from the television show Extras. This clip makes me laugh every single time. I hope it does the same for you.
Ian McKellen on Extras by Victor_Bugle
When Sir Ian says acting is all illusion, he's right. This also holds true for writing. When we write, we're creating our own universe. As a writer, our job is to make sure that we don't shatter that illusion.