Domino Finn put up a series of posts about doing a full reset of his writing career, and from what I understand he's doing pretty good. He did this a year or two ago (check his profile to find it... hang on... got it from my bookmarks:
I'd go through that and maybe PM him asking for his advice. Be specific with your questions etc.
I don't have anything to offer insofar as your genre b/c I don't read it nor write in it.
You got some great covers in your sig, and that's the first hurdle.
Your blurbs are okay too.
Most importantly, you DO have the writing chops. I did the Look Inside of the three series, and you open strong; you immediately go about world building in a manner that sucks the reader in (thanks a lot! I just burned an hour! LOL
As well as Domino, I'd look at Fox's book about relaunching old series. Twenty titles is a heck of a lot of work.
You need to plan. You wear two hats in this gig, biz and creative and you need both to achieve a sustainable income. Now I've seen that this thread sort of mirrors the one you put up in May insofar as your feelings of discouragement. That's a long time w/ that monkey on your back.
The best way for me to dispel that draining parasite is that action cures it. What I've done when I was in your position was:
1. DECIDE. In or out of this gig. I don't think sustainable Indie success comes from PT effort. I also don't believe FT effort's a guarantee. What I do believe is that CONSISTENT effort is the key. Decide on the number of hours you're willing to devote to this and stick w/ it. $1K/month is a great income booster, but it ain't on FT living, sure.
2. SET A PLAN. This is the heinous part. Stay away from ephemeral goals and make realistic, achievable ones that aren't overwhelming to you. Spend as much time as necessary nailing this plan down. Go over it a few times, and consult w/ others on it.
3. STICK WITH IT. A reboot needs 6-12 months to implement b/c of the business cycle of book selling. 6 months minimum. After you lock into your plan, start implementing it and have metrics established that can tell you if you're hitting your goals.
I wish you the best, but really; this is a great job, but it is a job, OK? It's what we do that's pretty rewarding, yeah; but life occurs away from the computer and outside your office.