Why not select a new area of work, to expand your business and make yourself more indispensable to your existing customers.
Keep an eye out for changes in technology, laws, insurance, weather, etc which can bring you in extra business.
What about offering a service to install "trace-heating elements" onto water-pipes prone to freezing?
You already have skills in tracing cables, why not suggest to your customers that you can install pipe insulation along with electrical frost protection....
Have any of your customers got revised buildings insurance conditions after last winter's freeze that might create a need for timer control, frost thermostats, etc?
Traditional PIR flood-lights can be replaced with versions with internal hidden cameras.
High-wattage lamps with frequent lamp failures, can be replaced with low energy, LED, PL or induction versions, saving your customer money.
Keep an eye on the prices of Photo-voltaic solar panels! As they are reducing quickly, there will come a point where they make economical sense to householders. When this happens they will need an electrician to do this installation!
Use the free training offered by equipment manufacturers, to give you new skills and opportunities for the coming years! Gen up on Speed drives, Energy Saving for your customers, new lighting technology, and wow your customers with your new skills!
Check out some training offered by Voltimum's partners:
OSRAM Webbased Training