What's the best way to overcome a panic attack quickly and discreetly?

Breath in for 7, hold for 5, and exhale for 7.

steady your breathing, take a look around you, find something that catches your eye, concentrate on it, and think what you like most about it, then tell yourself your fine, there is nothing to worry about, keep breathing slowly and steady

Close your eyes, count to 10, and take deep breaths. They don't always subside "quickly" but be sure to remind yourself that you're going to be alright.

Breathing. Breathing is so important. Simply inhale and exhale but slowly and only focus on that. Don't focus on your surroundings, or the people around or even what you look like. Just pay attention to the rhythm of your breath.

I find that grounding techniques work best for me. Start with your five senses: name three things that you hear, something you can smell, five things that you see in your favorite color. Bring yourself back to the present.

Try to find the source of the problem and get away from it. If it's just a random out of the blue attack then get somewhere alone, sit down close ur eyes take deep breaths and put ur hands on ur knees or upper thigh and just breath

The best way is to find something that helps you calm down. There are plenty of different coping methods. As someone who deals with panic attacks regularly, it's important to find something that distracts you and allows you to slowly overcome it. I find that sitting in a quiet room and taking slow, deep breaths is the best way. There are plenty of breathing exercises you can find online that are fast and effective at reducing the intensity of panic attacks.

I have found doing grounding techniques helps me with this problem listening to relaxing music also drinking green tea and taking my anxiety meds.

If you experience a panic attack, recognize it is one to help yourself stop it. Once you realize you are having one, take deep breaths. Breathe in slowly and deeply, feeling the air filling your lungs from the bottom up to the top. Count to three while holding your breath once you have completely taken in a deep breath. Exhale slowly, through your mouth, while relaxing your face from your eyebrows down to your nose to your jaw. Continue this process, breathing in deeply, exhaling gently. Remind yourself of some happy thoughts, whether it is a place a person, anything that makes you feel joy and like you want to smile.