Your thought's betray you

Betray your thoughts before they betray you
Don't hold on, it's time to make something new
Once I gave them thought and their dominion grew
I free myself now and question is the sky even blue?

Into my mind they shall not go
At least the underhanded motive I now know
I may not be able to deal a heavy blow
But after many martyrs the chinks in their armour will show.