As for taking on staff and growing the business...that's the other thing that I'm really wrestling with at the moment! All the reasons HandySparks has said have been putting me off until now. Some days I wake up thinking I'm ready to take on the world and grow the business and other days I think is all the extra aggro going to be worth it. I'm not obsessed by money, just wan't to live comfortably without too much stress. but on the other hand not sure I wan't to be one man banding up until retirement!! big decision really.
Dawsirn - Sounds like you and I are in a similar situation. For what it's worth here's my take on it:
Re: phone calls - I let calls go to voicemail then get back to people at lunchtime or after work. If i pickup during the day it destroys my train of thought and I get nothing done, it proper winds me up...
Re: too much work - i got busy to the point I could take somebody on, but the idea didn't feel right for the reasons listed above (loss of personal freedom / extra aggro). So instead, I started to filter out and turn down the jobs that I knew would be aggro, and I could focus on the type of jobs I wanted to do, closer to home. I'm never gonna be loaded but I've got enough to live on and I get plenty of time with the wife & kids, and generally pretty stress free.
Some of the happiest (and fittest) 60 year olds I know are one-man-band tradesmen, still trading.