I have trouble reaching an orgasm in sex. Do you have advice?

I have sex with my girlfriend every day. I enjoy it and find her attractive but I often have trouble reaching an orgasm. Probably about 3 out of 10 times I can't get off. I don't have this problem when I watch porn and masturbate by myself. And when I do have an orgasm, I have to think about it. I usually find myself averaging 25-35 minutes during sex. What should I do to fix this?I have trouble reaching an orgasm in sex. Do you have advice?
ok so im a girl but im willing to take a shot at this one. first off you said you do it everyday so cutting back a bit should help greatly. Being very turned on will also make you ***, so figure out what really gets you going and do it, see it, think about it, whatever it is, go with it. Also since you last about 25 minutes, maybe towards the end you get tired and so you just give up. Being really turned on will help you *** faster and then maybe you want have to last that long and wont get tired. Having your gf give you a ********, hand job, or 69 will get you more in the mood so try these out before you have sex, and then think about them while you have sex. Have your girl talk to you while you're doing it, telling you how she feles to have you inside her, look at yourselves in a mirror, try different things that are just so exciting that you have no other choice but to orgasm. good luck!I have trouble reaching an orgasm in sex. Do you have advice?
Many girls would love a guy that can last that long. For starters have sex less often. And don't beat the meat.
slow down.. your over working your hormones and physical self.your too excited.
Stop jerking off. And start having sex every other day. Also mix it up. Try new positions etc...
make your foreplay last longer, watch porn during foreplay or even during sex.