When the Sun moves enters Aries, the Zodiacal year begins. An impulse to initiate starts each new year. With a flash of inspiration, the Aries journey begins.
The Sun in Aries represents the spark of energy which instigates new life. At a fundamental level, Aries are motivated by the need to start and act. The drive to pioneer or lead may feature strongly. In some essential way, Sun in Aries must do their own thing.