Me, like many others on this website, have a hard time holding an erection. I stay hard through all the foreplay and what not, but right when its almost time to have sex, I get real nervous and can not hold an erection. I read some advice on this site saying to just relax and really not think about it. Any tips on "not thinking" about it. This has happened before, and my girlfriend is completely supportive of me, but i still feel like im disapointing her. Any advice to help me "ease my mind" would help out a lot. Thanks