I would like guide to ways to stop a panic attack?

Relaxation breathing: You can teach yourself relaxation breathing by reading and applying the book: the relaxation response by herbert benson. Otherwise, the best thing to do during a panic attack is nothing. Let it go away on its' own and it will eventually go away. That is called desensitization. Another great book for anxiety is called: stop obsessing by edna foa. Good luck.

Breath through it.: If you can find a quiet place - do so. Breath in slowly ; deeply through your nostrils. Fill your lungs with air (but not to the point of discomfort). Hold for a count of five then slowly begin to exhale through an open mouth. Repeat at least 12 times, longer if you need to. If you haven't been assessed for your panic/ anxiety - that would be prudent. Anxiety is no fun but it is treatable.