The secondary progressed chart correlates to the "progress of your evolution", primary from a subjective viewpoint. Progressed Pluto moves very, very slow. On average, progressed Mars moves about 1 degree over two years. When Mars turns retrograde via progression, it will stay retrograde for 58 - 81 years. Progressed planetary changes of direction, whether to retrograde or from retrograde to direct are indicative of evolutionary turning points and next evolutionary chapters. A change of phase (from natal Pluto/Mars) - that is to say, between progressed Pluto and progressed Mars, shifts in the momentum or drive regarding the soul will/personal will activation - i.e the motivation for a new phase is to seek fresh experience, the motivation for a balasmic phase is to culminate (relinquish, surrender and transcend), etc.