For an example of one who overcame extreme shyness and became zealous in the ministry, see The Watchtower, September 15, 1993, page 19.
‏ • بِأَيَّةِ طَرَائِقَ ٱسْتَخْدَمَ يَهْوَه رُوحَهُ ٱلْقُدُسَ فِي أَزْمِنَةِ ٱلْكِتَابِ ٱلْمُقَدَّسِ لِإِتْمَامِ قَصْدِهِ ؟‏