Sounds like a particularly un-fun experience that's really wormed it's way into your head.
I agree with some of the above... you need to try to relax and get rid of your performance anxiety. And honestly, get back on the horse! I realize that the get back on the horse attitude has its inherent dangers as well, but if you take a step back, go get on a burro, and then a pony, and then get back on the horse, you shouldn't be a danger to anyone. Just take it super slow. Hit some really easy, baby dives. "Nothing a week on a coral reef wouldn't fix" EXACTLY! take the time to get comfortable with your equipment and bouyancy in a really easy dive environment, and then the tougher stuff won't be nearly as overwhelming. As a new diver, you'll sometimes find dives to be very tasking. You've got so many things to do; check your depth, check your air, inflate your b/c, deflate your b/c, look at your compass, where's your buddy, which way are you going, am i having fun?, equalize, clear mask, fix strap, adjust clip, what am i supposed to be looking at again? But as long as you stay safe, you'll get to the point where it FEELS like all you do is put on your gear, hop in the water, and go explore for a while. All the equipment stuff will fade to the background and you not only will things like checking your air and depth become fairly robotic and unnoticed, you'll be much more comfortable in it all, and notice it being there less. You'll fell less like a guy in gear diving, than a guy swimming around without coming up for air.
Take the time to even drop into the deep end of a pool, even if it's only 7 or 8 feet deep. swim around the pool. work on your bouyancy (this is a little hard in a 7/8 foot pool... 15 is better, but it can be done. if you can master bouyancy in 7 feet of water, you won't have any trouble at depth on a real dive), lay on your back and watch your bubbles. investigate cracks in the pool, etc. Just enjoy being able to breath underwater, and getting used to your equipment.
You will eventually become comfortable, and love it as much as we do! Give it time, and be safe. Good luck!
I agree with some of the above... you need to try to relax and get rid of your performance anxiety. And honestly, get back on the horse! I realize that the get back on the horse attitude has its inherent dangers as well, but if you take a step back, go get on a burro, and then a pony, and then get back on the horse, you shouldn't be a danger to anyone. Just take it super slow. Hit some really easy, baby dives. "Nothing a week on a coral reef wouldn't fix" EXACTLY! take the time to get comfortable with your equipment and bouyancy in a really easy dive environment, and then the tougher stuff won't be nearly as overwhelming. As a new diver, you'll sometimes find dives to be very tasking. You've got so many things to do; check your depth, check your air, inflate your b/c, deflate your b/c, look at your compass, where's your buddy, which way are you going, am i having fun?, equalize, clear mask, fix strap, adjust clip, what am i supposed to be looking at again? But as long as you stay safe, you'll get to the point where it FEELS like all you do is put on your gear, hop in the water, and go explore for a while. All the equipment stuff will fade to the background and you not only will things like checking your air and depth become fairly robotic and unnoticed, you'll be much more comfortable in it all, and notice it being there less. You'll fell less like a guy in gear diving, than a guy swimming around without coming up for air.
Take the time to even drop into the deep end of a pool, even if it's only 7 or 8 feet deep. swim around the pool. work on your bouyancy (this is a little hard in a 7/8 foot pool... 15 is better, but it can be done. if you can master bouyancy in 7 feet of water, you won't have any trouble at depth on a real dive), lay on your back and watch your bubbles. investigate cracks in the pool, etc. Just enjoy being able to breath underwater, and getting used to your equipment.
You will eventually become comfortable, and love it as much as we do! Give it time, and be safe. Good luck!