If you're self employed that's just the same as being a freelancer with another name, so why not? There is no reason at all why you can't travel the world, supporting yourself as you do by earning money en route as a joiner, just the same as you could by being a brickie or chef or whatever. And moving from job to job ( even if you're not) makes it highly likely that you might well need to apply for visas for one country, while you're still in another, and to comply with local laws, you might well need to have your passport on you at all times - which you can't do if you've sent it off to an Embassy. So become a sole trader, create a letterhead, and apply for a second passport. If you're self employed, you'll have tax records etc anyway, which support your status, so you're part way there. But be warned - make sure your application is as good as it can be (eg spellcheck it, make sure it reads properly, fill in all the bits they ask you to etc)because once you're on the radar, there is no going back, and if they bin you, chances are, you'll stay binned.