For many home-based workers, the chief advantage of the home office is that it lets them achieve a more equitable balance between work and family. The key word here is balance.
Once of your most difficult tasks will be to convince loved ones that you really are working. Even the most considerate family and friends may suffer from the common misconceptions about home-based work--you're available any time and you can drop whatever you are doing. Make it clear that you are earning your livelihood, not indulging in a hobby.
- Emily Post's The Etiquette Advantage in Business