When Michael Bennett took the first step towards full-time, ordained Christian ministary, he dreaded being asked whether he "felt called". Because in all honesty, he didn't.
Many years later, and after extensive biblical research, he came to the conclusion that the common idea of needing to feel a subjective call from God before entering the ministry is misguided and unbiblical. In Do You Feel Called by God? he shares this story, including the evidence that changed this mind.