If you become pure devotee of Krsna, then as soon as you think of sex, you'll spit. "Eh! Nonsense. What is this?" This is the result. That is the certificate, whether you have got that attitude — spit on it. Then you understand that you are increasing. Otherwise you are in the same hellish condition. You may show that you are becoming a devotee, very great devotee. So test yourself, how much you have advanced.
>>> Ref. VedaBase => Srimad-Bhagavatam 7.6.4 — Vrndavana, December 5, 1975