To sequel or not to sequel?

My debut novel is approximately 30 days old this week, and like any new baby, is still keeping me up at night. My gut tells me that by this point my friends and family who were thinking about purchasing it probably already have, and so any sales from this point on would be from strangers. This is a prospect that both excites and alarms me.

I unfortunately have a taste for writing now, but do I truly have the skills necessary to convert it from hobby to business? Only time will tell for sure, b...