First Stage of Conversion

The first stage of conversion is simply the conversion from non-belief to belief. Specifically this stage culminates with the graces bestowed during baptism.

There is a second stage of conversion which is a continual process that we are to undergo for the rest of our lives. More on that later.

Here's a good quote from Vatican II's Dei Verbum illustrating the type of belief to which we should all aspire. This is the goal for both the first stage of conversion, as well as the second stage, during which we work to perfect it. Notice the importance of faith including the activity of the intellect and will - without both it won't be properly grounded.

The "obedience of faith" (Rom 16:26; cf. Rom 1:5; 2 Cor 10:5-6) must be given to God as he reveals himself. By faith man freely entrusts his entire self to God, making "the full submission of his intellect and will to God who reveals," and willingly assenting to the Revelation given by him.