Method 1: You can do it once and then again about 30-40 minutes later, so that it can last longer. With this experience you can gain confidence and it will slowly get better.
Method 2: Have a thicker skin, no matter how the woman complains about you, just do your own. Once or twice, don't care, you can insist on a longer period of time, the more careful you do, the sooner your side comes.
Method 3: really can not, you can use the glans surface anesthetic, etc., and then can not try brother half a tablet, with confidence, do not use.