The first and best step to stopping nightmares is to understand that you don't have to have them. Many nightmare sufferers are convinced that they'll have them forever, and that there's nothing that can change that.
It's simply not true.
This website details the techniques that you can use to stop having nightmares.
Not just that, but you can start having fun dreams as well, once you stop having nightmares!
Dreams are highly dependent on the expectations of the dreamer. More on that will come shortly, but just know that your expectations about your dreams helps guide the kinds of dreams that you have.
Nightmares can be a vicious cycle: you have a nightmare, and it scares you, which then leads to more nightmares. They happen repeatedly and soon you come to expect them. At that point you're stuck in a loop of stress that makes going to bed a terrifying prospect.
The first step to freeing yourself from nightmares is to open your mind to the possibility that there is a future where you don't have nightmares anymore.
You have power in your nightmares. You can change the outcome in the moment using basic Lucid Dreaming techniques.
This technique is easy to learn and can happen almost instantly. Even in the same night it's learned. While much advice exists that can help you avoid nightmares before you fall asleep, this technique is one of the few that you can actually use in the middle of the nightmare.
Upcoming articles will cover this technique in-depth
In order to banish nightmares, you'll need to get a comprehensive understanding of what kinds you're having.
Logging all of your nightmares will give you a much better understanding of what's happening while you sleep.
External factors such as body pain or diet can lead to nightmares. Conditions such as Sleep Apnea or Restless Leg Syndrome can lead to nightmares on their own.
More importantly, once you've identified your types of nightmares, you can work to change them.
Let's use an example of a nightmare in which the dreamer is chased by an angry mob. The dreamer typically wakes up after being chased for some time, and is often physically agitated with high heart rate and/or heavy breathing.
Their pattern is to have this nightmare and wake while being chased.
They would take a piece of paper and write out their normal nightmare, but then change the ending:
"I am being chased by a mob of people. I am running from them. As I run, I realize that my body is getting lighter and lighter. Soon I am floating above the ground and am flying away from the mob. I am experiencing a pleasant dream where I am flying and wake up peacefully."
By changing the ending of the dream, the dreamer is increasing the likelihood that the nightmare will change.
Adding in the Lucid Dreaming technique above can increase the possibility of changing the dream while in the dream. These two techniques have the potential to provide relief to sufferers of nightmares.