There are a lot of good reasons for going your own way, but it is not easy.
If you have a partner who can help out with the paper work, invoicing, etc, it makes a big difference as that is tedious but has to be done. No invoice and you won't get paid. Forget tax returns and HMRC will be down on you and can make life seriously difficult. Get an accountant and listen to them on the likes of accounting software (Xero, Quickbooks, etc) to make it easier for you.
It can be stressful due to the lack of back up if you are ill, on holiday, etc, but make provision for it - you have to have a pension, etc, in place and plan for holiday time. Also you have to be looking at earning roughly double what you think you need to live on, as after tax/NI, pension and other allowances (insurance, professional fees, van costs, calibration and tool upkeep/replacements) you can look at 25-50% of your earnings vanishing.
While I don't do this professionally, a number of electrician jobs are far easier if you have a mate/apprentice, but taking someone on is a big responsibility. However, if the work is there it is well worth taking a serious look at that. Again, ask an accountant about the details.
But if it is workable overall, you get to be your own boss and can deal with things your own way!