Do you ever feel like you God is asking you to do something way beyond anything you can ever imagine doing? Pastor Rick Warren says you are in good company
"Abraham was old, Jacob was insecure, Leah was unattractive, Joseph was abused, Moses stuttered, Gideon was poor, Samson was codependent, Rahab was immoral, David had an affair and all kinds of family problems, Elijah was suicidal, Jeremiah was depressed, Johna was reluctant , Naomi was a widow, John the Baptist was eccentric to say the least, Peter was impulsive and hot-tempered, Martha worried a lot, the Samaritan woman had several failed marriages, Zachaeus was unpopular, Thomas had doubts, Paul had poor health, and Timothy was timid. That's quite a group of misfits, but God used each of them in his service. He will use you too."(excerpt from the Purpose Driven Life)
When you hear that voice calling you to do something out of your comfort zone, I encourage you not look at your own inabilities and don't focus on your insecurities, but instead look at an Almighty God who is able. Get excited, wait and watch as He does a work in and through you.