The four main spiritual paths for God Realization are Karma Yoga, Bhakti Yoga, Raja Yoga and Jnana Yoga.
Karma Yoga is a suitable yoga for a person of active temperament. Karma Yoga is the way of selfless service.
Bhakti Yoga is a suitable yoga for a person of devotional temperament. Bhakti Yoga is the path of exclusive devotion to God, who seeks union through love or devotion.
Raja Yoga is a suitable yoga for a person of mystic temperament. Raja Yoga is the way of self-restraint, seeking union with God through mysticism.
Jnana Yoga is a suitable yoga for a person of rational and philosophical temperament, or a person of inquiry. Jnana Yoga is the path of intuitive knowledge, seeking to unite oneself with the Supreme Self through inquiry.
The word Yoga really means union with God. The Sadhaka often ventures into all four disciplines on their path. Whatever may be the starting point – Karma, Bhakti, Raja, Jnana – the end goal is the same – communion with the Divine.