This quote speaks to two main ideas that we should all live by. Speak into existence what you want for yourself and your life and watch the universe deliver. Words are a powerful tool, use them wisely. Also, we need to be honest and speak the truth. Why would we say anything other else? We all deal with enough BS on a daily, let's not add to the minutia.
"I am, whatever I say I am and if I wasn't, why would I say I am."
- Marshall Mathers