So you want to be your own boss, master of your own time and talent?   Quitting the 9-5 and going self-employed is the dream for many of us -- but it's a big leap, with implications for tax, earnings and job security.   With the aid of accountant extraordinaire Julia Rosenbloom, first hand freelance experience from our very own producer Joel, and a burning question from Mandy of Oxford, we assess the pros and cons of self-employment, and the different ways in which you can go it alone.    To get in touch, email [email protected] or phone our voicemail number at 07523 039447.   And visit www.telegraph.co.uk/moneypodcast for more.   Other useful links    https://www.gov.uk/self-assessment-tax-returns   https://www.gov.uk/working-for-yourself