No, you don’t have to turn to an accountant when you are self-employed. You can complete your own tax returns and so on

However, like any other business owner, a sole proprietor must keep complete and accurate records of revenue and expenditures. Bookkeeping for a sole proprietorship can be simple enough for a shoebox accounting strategy or complex enough to enlist a professional. 

If you want to save yourself stress and hassle of sorting everything out, then hire a bookkeeper

Learn more about bookkeeping for sole proprietors