Erectile Dysfunction Due to performance anxiety

I have had habit of masturbation back when I was 17-18 years old, Had masturbated alot then, then I left masturbation then, A guilt always remains in my mind that I have lost my power due to excess masturbation as all says masturbation is unhealthy for sexual health, Anyways once I had a chance with a girl for sex, but I was so nervous even I couldn't talk and at that time I didn't get any erection at all, I was very much ashamed infront of girl and my friends, that incident also made my anxiety more high, I'm 30 now, erection occurs I see when I wake up in mornings, and other times erection don't occurs but if erection occurs its for a very short time for 2-3 second only and disappears,

Night fall occurs 1-2 times in a month, like when I ate too much before sleep, sometimes with dream and sometimes without,

drjitresh, waiting for reply