I have first hand experience that employees can be difficult (I have managed a number of people over my career and have to let some of them go for various reasons) so I am aware and understand that whoever is running the business when I am not there needs to be trustworthy (I have heard some horror stories on this from my friends who own businesses). I acknowledge the employees part can be a real challenge if you don’t have the right people working for you and can potentially sink the whole business plan and take a toll on you mentally and financially as TJP and HotRodDave pointed out with their experiences.
It's a new generation out there, and the above is likely to be your biggest challenge. keep us posted
