There are two difficult issues that an atheist in a religious family or community faces: whether and how to tell your parents that you no longer believe and how to answer your young children when they ask you whether god is real.
In this collection of three essays (sent to me by reader Norm) the first and third deal with how to break the news to a young child that there is no god, while the second is by an 18-year old atheist who talks about his own experience of deconversion. In my own life, I discovered after she died that my mother knew about and was accepting of my atheism even though I had not told her about it fearing that she would be saddened.
What I have found is that while some are initially shocked when I tell religious friends and family members that I am an atheist, far from rejecting me, they are often very interested in knowing more about why I stopped believing. I think that apart from simple curiosity, this is because a lot of believers harbor doubts themselves and they may feel nervous about sharing them with their fellow believers while discussing them with a nonbeliever is safer.