The Earth not only spins on its axis and orbits the Earth, it also slowly wobbles, just like a spinning top wobbles around its axis. This motion is called Precession of the Equinoxes because it causes the apparent shift westward (backwards through the zodiac) of the equinoxes relative to the background stars (by 1 degree every 72 years). (It causes a shift of the Sun relative to the background stars as measured on any day of the year, but the Equinoxes are convenient times to measure this shift).
We tend to think change will require some great exhausting effort. That we will have to gear up for it and push really hard. But the change required now is to stop going about things in that way. To stop forcing and pushing. To do less, consume less, work less. Yes, Saturn in Cap lends itself to discipline and work. But as Saturn is with the South Node, we are called on to release the unhealthy patterns of Saturn, and that includes force and over-effort.
Saturn shifted into Capricorn on December 19 2017, and--aside from a short stint in Aquarius--it will stay there until December 17 2020. Saturn can be a difficult energy to work with. But with a little knowledge, we can really use this transit to our benefit.