The biggest proof of divine leading is salvation. It started morally before directionally. Those little nudges are leadings- going to church, reading your Bible. It is dangerous to ignore the leadings of God. Every time you ignore the nudges of God you desensitize yourself to His voice but every time you follow the little you get stronger in recognizing what He is saying next time. Your passion, zeal, and Godly jealousy can be pointers to the leadings of God.