First off, I'm sorry to hear of your struggles. Secondly, I commend your diligence. As for which course of action to take... There is no silver bullet and while it may seem frustrating you may very well be right on the heels of success. You never know when it will take place in your life, but if you work hard, smart and long towards a clear goal you will get there. I would avoid bouncing from one opportunity to the other as it is difficult to hit a tipping point if you're spreading your activities too thin. Best of luck to you.