Manage Personell
There is no headache in construction bigger than having to supervise all the subcontractors, consultants and all the stakeholders when building a house. Incorporating guidance from the architect, interior designer, and engineer advice from family members could halt the process. Add having to supervise and monitor the site workers and all the stakeholders without any experience in construction. Recipe for disaster indeed.
To maintain your sanity and save both time and money, a project manager is a must-have. Let them handle the supervising, resolving disputes and redirecting and terminating staff (where necessary) as you stay focused on the quality of your work. This is the only hack to getting a job well done in time without sweating it.