1. Make sure you're really aroused before you put on the condom. Not just erect, but I mean your whole body is aroused and so is your mind. Lots of foreplay with the intention of arousing both of you will help a lot.
2. Lubricate the inside of the condom, so that your cock slides somewhat within it.
3. Use a ribbed condom. It's ribbed for your pleasure too, not just hers. If it helps, turn it inside out so you get maximum friction on your cock.
Hope these suggestions help. I know how frustrating this can be.

