Allow me to share my part. Since i have a few panic attacks myself..and i also do meditation.

First, lets understand that anxiety or feeling anxiety is a mental illness at a different platform. (Not crazy or so). In scientific, the brain lack of some crucial vitamins or minerals..such as inositol or some other thing else. These can be replenish thru appropriate diet...but note that it can be leaked thru various reason...celiac....gluton....alcohol..excessive sweating....people may disagree because the question is why sometime one won't feel anxiety only at certain incident....so my question is...do you know what vitamins or mineral is missing from your body on a particular day? People with anxiety problem can't stop themselves from the excessive thinking or non stop thinking...is a medical condition but is not becos of "think too much". I know it because i have it. There are times when my body condition is good and when i try to think some bad event in the past but the thoughts just stop and it just choose to ignore those bad things easily. But there are times when the body condition is no good...some past bad events just pop up of" no where" and without mindfulness....we just keep dwelling non stop ( and this is where meditation practise came in handly which i will explain later on)....to the extend that we do silly thing that impact our life....

So this is a medical condition that need medical help...and to exercise moderately without sweating too much...take good care of your guts and make sure u got what is missing from your guts...you must kick alcohol out of your life...not only it causes mineral leaked out of you...it is damaging your liver which regulate the mood.i would advise some vitamins instead of medical drug....

Meditation is a practise to train the brain to stabalise. And it may need a long term practise before one could understand how feeling arised and how to stop them.

And without a good foundation in meditation, it is difficult to attain peace when you are having anxiety problem.

Meditation correctly "train" you to be "aware" of "present". It should be able to tell you " i am feeling nervous now...and this is due to xxx xxx. So you start acknowledging in your heart and mind...saying in your mind... ....anxiety...anxiety....anxiety....many many times until your brain feels numb and tired"..(do not think about any event at this points. Focus on "saying" anxiety..anxiety..)...then it should go away for a while...but at this time normally i will pop in a mutli b complex vitamin as i know that something is missing from my guts...causing me to spirl into anxiety easily..and in just 10 -15 mins every would be fine...

How to meditate?. The basic sitting comfortably....take few deep breathe until the body relaxed....then start to focus on your stomach area. Two inches above the navel.....chant this in your mind......when the stomach inflated...say "rising"...when the stomach deflated...says "falling". With the "zing" end at highest point....and "ling" end at lowest point. When you feel itchy...focus the consciousness at the place...keep saying....itchy...itchy....a lot of time until it go away...it will if you are focus enough...likewise for numbness, pain etc...it will keep coming back and you just need to attack this phenomenom..and sometime you basically spend half to one hr doing so and you find that you failed to attain peace....the truth is...you are training in your mind to be focus and in long term...it will be easy and helpful. Yet sometime your body is very cooperative and easily you will go into a calm state..a bit like sleepiness but not so, your breathing will automatically be very shallow...you will realise your mind is not thinking at all....a elementary peacefulness or calmness...and if you are lucky....you will go into a state call "deep absorption" when your senses is all closed....where you can't hear any noise at all...can't feel anything.. you will find that you are in a dark space without anything...no movement...no nothing....no sense of time....but you are aware that you are conscious....lets skip this for further discussion.

What about thoughts? When thoughts arised...shift your focusing to the centre of your rib..at the triangle meeting point....keep saying in your heart too...thinking..thinking...thinking....until it goes away...sometimes it is difficult....and sometimes it keep coming back..just keep doing it....it will become a habit and you will be able to tackle it quick and move on...

Take note of feeling too...in every session of meditation....our feeling and mental stage is different....thus we need to know we are frustrated, boring, exciting or anything else...and using the same method of reciting again and again until it goes away...as i say...sometime u end up sitting frustrating and no peace at all....don't worry....just know that your brain is practise focusing....

A quiet place is needed for beginner. So that you one less obstacle to attain to....

Some dont understand the real feeling of calmness and peacefulness...choose one meal time at home with no people disturbing....choose a food easy to eat....just need a spoon... Bring the foods into your mouth..close your eye...shift your focus to the side of your mouth where the teeth is biting...concentrate on the biting and the food...keep watch of the bite...keep notice the food become smaller and smaller...keep watching until you swallow the food...watch out your tongue move..after you do a few times...you will find your brain goes into a calm stage..your eye will become lazy....you will become slow and calm.......do it very very slowly...as if you are a small living in your mouth...this method rip faster result for calmness...but the calmness it short too....