There is no way to insulate yor personal assets from liability arising from your business if you are a sole proprietorship; as a sole proprietor, there is no separate business entity, but rather the business and the person are one and the same. Therefore, a claim against the one is a claim against the other.Having the appropriate insurance (e.g. a good general commercial policy, with liability coverage and also errors and omissions coverage as applicable, plus an umbrella policy on top of that) will, however, provide a substantial amount of protection.