If someone is not talking in front of mirror, he is missing a best ever conversation in his life. Talking to yourself is a best way to assess your strength & weakness. You don't have to hide any truth and see how your mind respond to your statement.
There is always a multiple ways to resolve an issue and the best way to come to a conclusion is to talk in front of mirror and assess the situation. This is more of a Facebook stuff but the clear mind is a best ever tool for decision making. Making a decision without any second thought is easy this way and to keep your facts on table for formal discussion. I may take Expert Judgement but end of the day it's my decision and I am solely responsible for it and I wanted that to be a clear one.