In reply to working as well.
i am in the same boat as you at the moment, whilst working full time aswell is a good start it can become very frustrating after a while.
firstly, if like me you hate your regular job that will become worse as you start enjoying working for yourself and earning a far better hourly rate
secondly to grow your business you need to give your time, something you will not have doing 2 jobs
thirdly when doing your second job you need to use all the money to get your business growing quickly ie advertize in press as well as flyers
when you get a blank on an area don't let it get you down as you may well get a call weeks later.
I am about to start knocking on doors in area's that i have customers so as to get compact round,not looking forward to this but it really must be done
good luck paul