In principle, a planet's transit (or progression) to itself is a 'reset' relating to its energies and cycles, or some type of new start. It is not a doubling effect of natal (bad) Saturn + transiting (bad) Saturn = "Double bad." It is important not to do this reductionist kind of addition, but to look at it in terms of cycles. Saturn comes back around to its starting place and starts a new cycle in your chart dynamics. It can be relatively uneventful, or very eventful -- depending on the natal alignments and what other transits/prog are happening during that time. ... and depending on your outlook.
My first Saturn return in 1999 was a good period in which I gained in health through disciplined health balancing activities. It was quickly followed by Jupiter's transit conjunct my natal Sun.
Astra, with your Saturn at 23 Scorpio, it makes a sextile to your Moon (stabilizing), and is past conjunction to your natal S.Node. In addition its natal declination [16S21] is not in aspect with any other planet. So in both longitude and declination, there are no major aspects. This can allow for a smooth Saturn return, particularly since your chart has not been simultaneously hit by the Uranus-Pluto square.
The Saturn return may be one of the best examples of creating negatively anticipated results, seeing something 'bad' and blowing it out of proportion through fear, worry, reactionism. It is hardest on those who carry with them a balance of negative qualities associated with Saturn (fear, control issues, father issues, refusal to take personal responsibility) over positive ones (discipline, patience, long-range planning, self-control). So in a sense it can be a checkpoint for what you've put into life, and how much a reset is needed. It is a measuring point of you with you, and you with your parental/social standards.
Saturn transits to natal Sun, Moon, Asc, Mars, or Venus are definitely more challenging, all other things assumed equal.
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The Declinations Guy
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