Self-publishing can be expensive, so can you DIY formatting? Some people use Microsoft Word templates, Vellum, or InDesign to format their books. It is possible to format your books yourself, but make sure to check your genre guidelines to ensure that your final product looks professional. Sometimes, it’s better to spend a few more dollars if you know it’ll be correct versus saving a few dollars and delaying the whole process.
So, final verdict: yes it is possible, but depending on your budget and schedule, finding a professional formatter may be best if you’re looking for a quality and professional-looking final product.