How to stop thinking about sex

1. Understand what your triggers are. Sex is not always the topic that gets you thinking about sex. Sometimes pure boredom with life begins an automated response that looks for entertainment, and eventually leads to thinking about sex. There are a number of triggers. If you can identify your triggers, you can limit their capacity to veer you into thinking about sex. Stress is a huge trigger for sex, and thinking about sex.
2. 2
   Develop your willpower. If you truly want to stop thinking about sex, you need to make a commitment to yourself and stick with it! At a minimum, you should make a goal to curb your sexual thoughts so that they don't distract you from your other daily activities, such as work or school.
3. 3
   Understand that there is nothing wrong with thinking about sex. It's entirely natural, and everyone does it. Biologically speaking, it is next to impossible to stop thinking about sex completely, as your body instinctively drives to reproduce.
4. 4
   Don't forcefully try to block the thoughts from your head. By telling yourself not to think about sex, you are still putting the thoughts of sex in your head.
5. 5
   Find a way to occupy yourself. You might try working out, reading a book, taking a walk, or taking up meditation. Spend some time with your friends. Watch a movie. Play an instrument. Go out to dinner at a restaurant. While outside activities are probably not going to get thoughts about sex completely off your mind, it will help to facilitate other thoughts outside of sex.
6. 6
   Avoid giving in to temptation. Try not to objectify an individual by staring at all of their body parts. Avoid looking at pornographic images and/or reading erotic writing. Remember, temptation is counter to your goal and denying yourself the opportunity can help to keep sex off your mind.

Tips

• Try to slowly stop thinking about sex. Take small steps.
• If all else fails, think about things that you would never associate with sex. Envision your grandmother baking cookies if you don't find that too disturbing. Call your mother or father on the phone. Think about aluminum siding (or vinyl if that doesn't work). Be creative with your unsexy thoughts!
• Don't frustrate yourself over sexual thoughts. Remember that everyone else thinks about sex, too. What matters is that you can still go on with your daily life without letting something as silly as sex bother you.
• Release expectations. Expectation makes you feel like you should do something about your desires. Simply let the desires flow in and out of your mind without expecting yourself to do anything about them. Learn how to enjoy desires rather than expecting yourself to fulfill them.
• If you are in a relationship, do something for your partner. Use your sexual drive as a resource to act in a loving and caring manner. Be romantic!
• Know that sexual thoughts and feelings are natural for everyone. If you never have sexual thoughts, you probably wouldn't enjoy the real thing at all!
• Recite words to yourself - scriptures are helpful, or just a promise you made to yourself. When you speak, all other thoughts stop.
• If you have a firewall guard in your computer try to enable parental control and put the profile to teen so you won't accidentally stumble across any pornography, whenever you visit any pornographic and/or sexual content sites it will prevent accessing them.
• Sex is actually like a path if you get caught its first terminal you will probably end up in next terminal.
• Stop watching people in sexual way.
• If you have sister who wears revealing clothes, try to avoid looking at her genital areas instead directly look at her eyes.
• Use your concentration to math, it will greatly help you!
• Look at human body more open minded way rather than sexual way
• Practice what you think like, and even if you see a naked man or woman you won't be overly excited.

 Warnings

• In highly severe cases, obsession over sex can be managed by therapy and medication. While chances are, you aren't thinking about sex nearly as much as you may think that you are, speak to your doctor if you believe that your thoughts are completely uncontrollable.
• Do not engage in intercourse with another individual without their consent. While you may have heard it several times before, "no" still means "no" and IS rape.

From Wikihow.com