Erections only at night or when waking up

I get solid erections waking me up most mornings, but have struggled with ED in bed, with viagra and cialis only helping some of the time. The doc insists that if I am waking up with strong morning erections, there is no blood flow issue, but a brain flow issue. Thoughts? This has been an off and on terrible issue in my life. I am 32, healthy, active, good t levels, eat healthy, dont drink, dont smoke, dont watch porn. After my last girlfriend left me because of this condition I am extremely lonely and worry I can never approach a woman again with any confidence whatsoever.

I have a history of depression, but am on welbutrin and lithium both helping. The welbutrin initially gave me random boners in the day but thats subsided. I am extremely confused on what the problem is, but doctors have not been helpful.

I would think the depression might hinder erections... I have had performance anxiety- I know it's mental, for precisely the reason you mention- I have morning erections, and when there's no perception of pressure on me, then I have no problems.

If I can get enough out of my head, to enjoy the moment, then it's better- but it can be awfully hard to do, I'll admit. Once you get to worrying about it, it does seem to become this wicked little feedback loop.