Śrī Caitanya and His principal followers established a verifiable process through which we can achieve absolute happiness. They say that by the mercy of God or His devotee we first obtain transcendental faith (śraddhā), which brings us to a saintly person who already has love of God. Having accepted him or her as our authority (sādhu-saṅga), we receive a seed of divine love and start to carry out his or her instructions by doing devotional service, chanting mantras, worshipping the deity etc (bhajana-kriyā).
Due to our bad habits from the past we may fluctuate certain time in our determination, but if we carry on with the process, our bad qualities get destroyed (anartha-nivṛtti) which makes it possible for us to become stable in devotion (niṣṭhā) and to get a genuine liking for the path (ruci). After this liking matures in its due time, it transforms into an intense attachment to Kṛṣṇa (āsakti) where we are prepared for manifestation of transcendental love (bhāva) that ripens into premā/prīti (mature love of God).
Unlike most other spiritual paths where one needs to leave material objects because they are considered obstacles in the pursuit of happiness, Śrī Caitanya explained that the world is to be seen as the creation of our beloved Lord and thus should be used in His service. Whether songs, dance, poetry or other arts, everything has its place providing we connect them with Kṛṣṇa. Also, everyday activities such as going to work, cooking, or shopping are also parts of bhakti. Indeed, if we are surrendered to Kṛṣṇa, our whole life becomes surcharged with devotion.
Hence this process is most universal, practical and accessible for everybody. While in the past only the brāhmaṇas had the right to perform sacrifices, and generally only men were considered suited for spiritual disciplines, Śrīman Mahāprabhu abolished all such considerations based on the body, and having shown that we are souls that need a loving relationship with the Lord, He gave the equal right to practice devotion to all without distinguishing between sexes, races or nationalities.