Here are some suggestions:

Remember and rest in the fact that God causes growth; not people. Youth workers, in essence, are farmers - who intentionally plant seeds. Yet, it is up to God in his timing and wisdom to cause the growth. In 1 Corinthians 3:6-7 (NLT), Paul writes: "My job was to plant the seed in your hearts, and Apollos watered it, but it was God, not we, who made it grow. The ones who do the planting or watering aren't important, but God is important because he is the one who makes the seed grow." God's timing can be different than our timing and that can lead to frustration. So, strive to be a good farmer - and be patient.

Don't try to force this young person to follow Christ, through lecture or manipulation. This is not to say there isn't room for words. Be clear in your words. Just don't be a "salesman" out to close a "deal." Instead, love this young person. Be intentional about developing a relationship with this student! Your love and compassion (really - God's love being demonstrated through you!) preaches the Gospel in powerful ways. Even if this student doesn't seem responsive to Christ, they will notice your behavior to them - and that will speak volumes!

Lastly, pray! Your prayer on behalf of this student is important and valuable! Never underestimate God's willingness to answer and pleasure in answering His people's prayers!

http://www.simplyyouthministry.com/community-articles-jim-s-thoughts.html