Planets in Retrograde
All the planets except the Sun and Moon go into retrograde motion. Retrograde suggests that the energies of the planets are not in full expression or allowed freedom of expression. The energies are stifled in some way. In some cases, we can wait for the energies (Planets) to go direct before taking action. In the case of the outer planets however, the retrograde cycle is so long that it would serve little purpose to wait for the energies to go direct.
Saturn is the only exception to the rule. When Saturn is in retrograde motion, its positive energies are released. So stability and structure are enhanced and lessons, delays and obstructions are not as readily in place.