No writer can go it alone. That sounds like a rule. So, that being said, it is subject to scrutiny and, ultimately, dismissal, like all rules. But like all rules, there is a truth in the original formulation of the rule.
It is difficult to be a writer, an editor, a proofreader, a critic, cover designer and all the other associated jobs that go along with being an independent e-book producer. People need people, and though writer is a solitary profession by and large, the need to have good people around you is critical for success.
Now, I don’t want to get into the business side of the e-publishing debate, mainly because I have very little first hand knowledge, and JA Konrath has mountains of data to support his various notions on e-publishing which are far more informed than anything I might say. However, whether you pay someone to help to produce your work for publication, or if you just have a trusted circle of friends, a writer who goes it alone is not as good, nor are they as productive, as they can.Get a friend, get a business associate, get someone, but as a writer, you do yourself a disservice if you try be everything, all of the time. Control is nice in the independent publishing world, but readers don’t often reward bad writing and as a writer, do you want to produce sub par writing?