TSandM:
1. You're less likely to panic if you have encountered the situation before, whether for real or in training. If you recognize the problem and have a known strategy for dealing with it, it allows you a constructive response.
Relates directly to your confidence. If you have confidence in your ability to handle the situatiuon, you will not panic. That's why SCUBA skills (including the "useless" confidence building skills) skin diving skills and swimming ability are so important.
TSandM:
2. You're less likely to panic if you can recognize your rising anxiety level before it gets that far. If you don't recognize anxiety, it spirals.
That's the first step, the second step is how to deal with it, which you answered in point # 3.
TSandM:
3. Panic is part mental and part physical. You can control the physical part of it. In the ER, for example, keeping one's voice low helps keep EVERYBODY under control, including yourself. In the water, controlling my breathing has been very helpful in situations of stress.
Breathing is the key to everything. Calm breathing indicates a calm person. Often when I'm telling certain dive stories, people will make comments, like, "I'll be you burned your tank pretty quickly." No, I didn't. As long as I keep my head, I can control my breathing even when I'm scared. Controlling my breathing also helps me focus my mind on the solution rather than on the fear. If you think about your fear, you are on your way to panic. If you concentrate on breathing, slow deep breathing, your mind stays clear and you can think about the solution to the problem. When you are thinking about solutions, fear disappears. You don't have time for fear. After the emergency is over you get rubber legs.
TSandM:
4. Panic-inspiring things are often the result of snowballs. Having an effective coping strategy for simple problems prevents them spiralling into complicated and more difficult problems.
Excellent point. Deal with the small things right away. Plan to avoid causing yourself problems. You do not want to be hanging in a gray sphere, with little or no idea where the boat might be at dusk in rapidly fading daylight with a bloody flopping fish, no dive light, an unfamiliar computer, 20 minutes of deco at 30 feet with an unfamiliar computer that has no back lighting, 500 PSI and as the light continues to fade, you can no longer make out when to move from 30 feet to 20 or from 20 feet to 10. Did I mention there's a current and you are diving solo? If you ever get yourself in such a stupid situation, I promise you'll find it's more frightening than being chased by two aggressive Bull Sharks. Concentrating on your breathing ad keeping your mind clear is your only hope.