I recently read Francis Chan's Crazy Love. I'm not a big fan of the book, if you care. Sometimes we get caught up in wanting to live an extraordinary life for Christ - to do something extraordinary for God - but at the heart of it, it is little more than vainglory. Or, sometimes our desire to "do something great for God" is little more than our desire to be someone great.
St John the Forerunner says, "He must increase and I must decrease."
Jesus says, "Love your neighbor as yourself," "love as I have loved you," and "love your enemies."
St Paul says, "Make it your ambition to lead a quiet life, to mind your own business and to work with your hands."
Mother Teresa says something like, "We can not do great things. We can only do little things with great love."
Maybe God is calling you to Africa or India - so go already. But it's more likely he isn't. Strive to be less, to be no one. Love your wife. Be gentle with your children. Go to Liturgy. Pray always. Judge no one.
When we love our enemy, love the crazy fool of a pastor who wants to burn Qur'ans, love the one who wishes us harm - then we have begun to be in communion with Christ. For it is Christ who loves these.