Your core self is expressed through usefulness and craft.
Sun square your Sun
The Sun squares its own birth position twice a year, roughly three months before and three months after your birthday, and for about two days the year's plans meet a test. The aims you set when this solar year began rub against what is actually happening, and the gap can show up as impatience, tiredness, or a short temper with yourself.
Uranus square your Sun
Uranus squares your Sun for nearly two years, usually hitting the exact square three times while it advances, pauses, retreats and advances again. Your Sun is the part that answers to your name, the self you stand behind and the aim you steer by; Uranus is the sudden break and the impatience with whatever has gone stale.
Sun-sign horoscopes read the sky against your Sun. For the most accurate read, also read your rising sign — if you know it, that version is usually the truer story.