What to do??

Okay okay, Slow down.
I understand your situation. Just calm down.

If you’re having strong urges rn,
1. Stay off the internet. Stay away from your personal device if you can.
2. Stay in company.
3. Wear trousers, don’t you touch your Di**.
4. Workout?

About the question asked in this thread, I will reply later.
Stay distracted!

 

You can't do that unless you're some zen master.
When you pass like 3-4 months, these thoughts I'm assuming about porn you watched start fading away.

If you're talking about normal sexual thoughts about real-life people then you need to find some good habits and keep yourself busy.
And don't obsess over having sexual thoughts, that reinforces them even more (This will not be easy if you've been doing it for a long time).

 

Please understand:
Sexual thoughts are a part of what makes you a living being.
You can never Control the Occurrence of these thoughts. However, you can learn to handle them.
LUST cannot be controlled. But it can be handled.
With practice, the frequency and intensity of urges will decrease.

It takes wisdom, so start thinking about it!

Good Luck pal!