Have a family meeting to discuss the work before it begins. This will make the process much less stressful. Discuss outlets, lighting, colors, materials, etc. Who will be home and when during the project.
Workmen need an area to work and keep their tools and supplies. Material deliveries will need room to be stored. Consider now a good time to clean out the garage or the spare room for this.
Buy a big roll of plastic sheeting and blue painters tape. Seal off any entrances, cover any furnishings, etc. Take down pictures and shelving with nick nacks. Store away irreplaceable or valuable items.
All the cutting, sawing, taping and spackle dust will spread through out your house. Be calm and
don't forget that remodeling is a finite experience. No matter how disruptive the process, it's not going to last forever.