Getting all the way hard

[Unregistered]

I have noticed lately that i sometimes do not get fully erect when i need to. Others times i do, and i really hate trying to get some and then finding out that my size is not as big as it should. I mean i am hard enough to do what ever, but where as when fully hard I am nearly 6.75" long, at these times I am probably only a little over 6". It is a little embarassing, does anyone know any good workouts or solutions to fix this problem?
Thanks

[Edward]

Try using visual stimulants such as: Porn...Magazines, Videos, etc.
Maybe your gf or spouse can assist you as well...or whatever else may get you goin. ;)

[ebon00]

This will happen. You will not perform at your best every time. It might be stress, something you ate, any number of things that get in the way of a "full" erection. There's little you can do about it really. There will be ups and downs. Learn to live with it.

One thing's for sure though, obsessing about it won't make things better. Guaranteed.