Hi Thank you for asking HCM I have gone through your query.Avoid stress and anxiety.Go more into foreplay with your partner.Eat healthy food do exercise regularly.Stimulate your partner to the maximum extent before getting yourself stimulated.You can deviate your thought to something nonsexual when you about to near ejaculation. You can put on a condom or condom with anesthetic or anesthetic gel on penis to decrease the oversensitization and there by prevent premature ejaculation.If all these not helping then approach an urologist or Sex therapist or Psychiatrist for behavioural therapy and medicinal treatment.Hope this may help you. Let me know if you have any further query.