The Pen is Mightier Than the Sword.
The written and spoken word can create and maninfast ideas and concepts that no sword or shot can ever destroy. Once an idea is created and shared until it gains some traction it takes on a life of it's own.
A few well chosen words can, and have, changed the course of nations. Martin Luther King, Mahatma Ghandi, William Wallace, Nelson Mandala all rallied nations around their ideas - ideas which changed the course of history. They can change your course as well.
Do not underestimate the power of words on your life. Words shape your (and others) perception of life. The way you consistently describe your life is the way your subconscious will view it and therefore work to keep it that way. Another way to look at this is that you are speaking prophesy into your life.
You may be visualizing success or praying for it but if your words speaking only of lack, loneliness and loss then that is what you are sowing into your life in future. Worse, you're getting others to buy into that concept and add power to them.
Speak (and write) only of that which you want to call into existence. Have faith that they will in fact come to pass. Try not to speak of how little you have but instead of how much is eminently coming. Instead of speaking of how lonely you are or why you can't attract a partner, talk of how wonderful you are and the equally wonderful partner you're about to meet. Speak not of how poor your health is but instead on how quickly and fully you will recover.
Speaking of lack while awaiting fortune is sending mixed messages into the world. In a Christian perspective, you are not walking in faith. You cannot just pray once a week or even once a day, you have to live your life in faith that God (or the universe) will in fact deliver. If you know richness, love and health are all about to show up in abundance then why are you still talking about lack? Let lack pass and embrace your riches.
Sometimes of course it's impossible to not need to address it.
In this case Anthony Robbins has a wonderful chapter in his book Awaken the Giant Within. In it he suggests using silly phrases to de-empathize the negative and over empathize the positive. For example instead of saying 'I'm totally broke' you would say, 'I'm a trifle tight for money at the moment.'
So remember to always speak on the life you are moving into not the one your moving out of because like seeds, your words will grow into tomorrows realities.