In Need Of... Purity of Mind.

In the past couple of days, i think God may have been telling me something! I'm not really sure why, though!?
I have heard sermons, radio shows, advice and discussions on "Purity"... Why all this talk of purity? Is there something i'm doing that is impure? I'm not sure... I have examined myself, and i come up blank...
But am i looking at this in the right perspective? Am i looking to my physical lifestyle, or my spiritual lifestyle, or my mental lifestyle? Mostly when i think of purity i think of the physical context... Am i "keeping out of trouble"? Am i allowing physical lust to invade my life?
I've decided that in the physical sense, i'm fairly well off... I'm keeping the sexual "lusts of the flesh" under control, and that's what counts, right?
Wrong.
It does count, but it isn't the ONLY part that counts. Physical impurity is sin. Sin starts with what is in your mind... those thoughts move into your heart and become feelings... those feelings are translated into actions. What starts out as a thought becomes a sin.

So can we then say that impure thoughts become impure actions? I believe so.

So... Back to my dilemma... Is my mind where it should be? Am I concentrating on pure things? Am I focussed on what is right, true, holy, or pure? Is this the part of me that God is telling me to work on?

So what am i saying here..?
Romans 12:2 (NIV) -- Do not conform any longer to the pattern of this world, but be transformed by the renewing of your mind. Then you will be able to test and approve what God's will is--His good, pleasing and perfect will.

God is waiting for me to renew my mind... He wants me to want to get my mind pure so that He can show me what He has in store! If i start with my mind, my body, my heart and my spirit will follow!

So how do i know if i'm thinking pure thoughts?

Would i be able to say these thoughts out loud? Would i share them with my friends? Would i share them with my brother? Would i share them with my DAD??
I read a quote somewhere... "Never write anything you would not want read at your funeral." Maybe that can be applied to thoughts?

Feelin' like face #1.