You have a stellium including the Sun in the 12th house. I would imagine that 12th house themes are hard to miss in your life.
The 12th house is tricky because it rules both the return to the boundless unseen (spirituality, bliss) as well as hospitals, jails and asylums. With Neptune as the ruler of the 12th house it is savior, martyr or victim depending on how the energy is used... and with Neptune closely conjunct your Sun there is a double whammy of that energy.
With structure-building Capricorn on the cusp of the 12th, I would guess the energy is very outer-world tangible. Do you work at a hospital, jail or church?
Your Sun squares your 8th house Libra North Node. Your North Node is where your soul needs to go to evolve, and with the square there is friction you can probably feel that is trying to push you into balanced, social, relationship themed 8th house areas (death, psychology, taxes, inheritances).
Back to your original question... you asked what your strengths are... Well with a Capricorn Sun, in sextile to Saturn (ruler of Capricorn), I would think that the Capricorn energy is strong in you. You have the energy of a builder, doer, creater. Having Saturn in Pisces is still another dose of Neptune/12th house energy available to you.
Do you feel a natural ability to be a private detective?