Naturally, if you masturbate less, all those pent-up libidos will drive you (sort of) sexually mad. This is not a bad thing really and will help you reach climax with less effort.
If you want to cum fast while jerking off, incorporate these techniques:
Pee before you start. A full bladder or the all-present sensation to take a leak in the middle of a sexual intercourse distracts you from attaining your ejaculatory goal.
If possible, avoid sexual drive killers. For some guys, alcohol and certain medications drive away a man’s urge. One warning though, if your medications are the culprit for your ejaculation problems, don’t throw them away yet at the first instance. Consult your doctor first and see if there are better alternatives.
In addition, explore changing the place of your sexual activity. Note this change of scenery if it made you more stimulated and helped you cum faster.
Some users claimed that using a penis pump could also improve your sexual performance.
Extend foreplay. Change positions. If you find oral sex very stimulating, indulge in it as long as you both like before the two of you dive into actual penetration. For some couples, touching and dirty words increase the desire for orgasm.
Control your breathing. Though most guys use this technique to last longer and prevent premature ejaculation, others use this to cum quicker.
Many supplements on the market are known not only to increase libido or give stiff boners but also to help men attain faster ejaculations. Examples of these supplements include Maca, Horny Goat Weed, Yohimbe, Tribulus Terrestris, Ginkgo Biloba, Beta-alanine, and L-arginine.
Note that Viagra does not change sex drive, but only increases penis blood flow.
If everything else fails, pay your doctor a visit. Your inability to ejaculate faster may have a deeper physical or psychological connection. The best way to address your situation then is perhaps through medical intervention.