I鈥檓 not comfortable sharing my feelings in front of a group of strangers.
That鈥檚 okay 鈥 you decide what (or if) you want to share, and you will never be forced to share anything you don鈥檛 want to. The leaders are there to make sure no one is pressured to talk, even when asked a direct question. That said, if you鈥檙e nervous talking about yourself with other people, then group might be the right place for you to try doing something different.