Addiction doesn't show in the natal chart, just potential for obsession or compulsion from driving energies, or anxiety in the struggle to feel out the transcendent qualities associated with Neptune and Pluto, particularly. To say that addiction shows in anyone's birth chart is to interpret it as if it must happen. Not so. The birth chart shows subtle energy dynamics of soul development that imply potentials for how those energies may be put in play by us.
A stronger predictor of serious addiction issues is what one experienced in the early family environment.
In your chart Moon has the declination 21S24, thus putting it parallel Uranus [22S10], Neptune [21S10], and all these contra-parallel Sun [22N22]. This is an complex opposition of declination, creating a polar dynamic looking for integration by how those energies are expressed and balanced mentally and emotionally. Those can be expressed creatively, but may have to start with resolving any of the identity issues implied with Moon parallel Uranus and Neptune. That tends to indicate early life instability and uncertainty, which could have outsize effects on self-image, self-worth, etc.
Moon = inner self, subjective, emotional nature, feminine principle, indicative of mother/parents and early life conditions.
Uranus = higher octave of Mercury that goes beyond mere intellectual reasoning into group think, psi, but relates to detachment, restlessness, discontent.
Neptune = higher octave of Venus that goes beyond mere affection into compassionate acceptance regardless of outer surface qualities; relates to art, music, dreams, poetry, and possible neglect, uncertain conditions.
Moon conjunct/parallel these creates potential conditions for early life abandonment, neglect, material uncertainty and/or unreliable emotional support, thus leading to possible root identity and worth struggles.
There is tremendous creative potential with these two transcendent planets in close aspect with the Moon. Their energies, which are not 'rational' according to conventional thought or moral concepts, will be slowly integrated into how you feel about yourself and how you see your childhood and the persons involved in it. The fullest potential is of a visionary, a person who contains the many, the understanding of the masses and of the underdog or the abandoned ones within self.
Sun = personal capacity, vital energy, will power, the self expressed outwardly, the masculine principle.
Moon square Saturn also indicates likely difficulties with the early family life, which can leave a person feeling neglected or unloved. With this aspect there can be ambition and desire to prove oneself through work and outward accomplishments, but know that without internal healing such accomplishments may not overpower the uncertainties or sense of lack from earlier life.
Sun conjunct South Node indicates an awareness that is very much rooted in the past and what you were. It is very important to see yourself as a being who is a work in development and that there is as much unrevealed about you in your past as anything that may have been revealed. There was a definite starting place with your identity there, but you may benefit by developing a very real concept of 'the future me' in which you clearly outline that concept of you as a healthy, balanced, intelligent individual capable of living with knowledge of your past, but not defined or limited by 'the past me.'
Moon, Uranus, and Neptune are also aligned parallel with North Node [22S18], so there is an internal basis already in which to relate to this 'future you' and from which to aid others in overcoming similar struggles through some kind of group and/or creative effort. This aspect actually gives great internal inspirational potential for literally rewriting your internal script, history, identity to meet your needs and begin creating this 'future me.' I suggest looking into tools like hypnosis and soundwaves designed to create clarity and bring positive aspects of your sub/super-conscious out into constructive use.
By itself Sun contra-parallel Moon indicates there was some early life distinct polarity between the male and female principles at work in your life. This likely was with your parents, but it also implies that the masculine and feminine aspects within yourself are looking for equally full expression and balance with each other. This often is achieved by a creative (a)vocation or by service involving parents/children, men/women, or some persistent effort in which you can bring into balance these polarities, thus creating greater internal balance for yourself.
When imbalanced, such strong polar energies are often sensed as careening out of control, needing suppression (chemical control), or urging one from hyper-alertness to compulsive stimulation to keep at the effort.
With Moon and Neptune so close together, you need your dreams to work for you nightly, even if they involve some unpleasant exploration of past pains and unresolved matters. Our dreams can be like an internal, gentle psychologist that speaks in symbols, places, feelings, players that require our attention and understanding. So not medicating that away is a good thing. Work with it as you can.
This might be more than what you asked for, but I'm free associating with an eye to key points in your chart. I hope it proves helpful in some way.
Peace.