It's pretty clear that Timothy struggled with fear. Not fear about life things. I have no problem with day to day challenges. Spriritually, however, I can struggle to really declare my alligiance to my Lord. You would think as a missionary serving God that it would come natural.
Truth is, it just never does.
I have several neighbors that Christine and I are praying for. We haven't shared Christ with them yet. We do the small talk thing just fine. The Lord is speaking to me about this. Perhaps before you get back this fall you need to take a major step of faith, trust God's power, and share the best thing that has ever happened to you.