their is entire programs for this which you can find online. But I will give you this little bit if info. A archer should never know when the bow is going to fire, If you pull a trigger or punch a button you are in control and know within a split second when it will fire so with that said try this.
Have a friend stand beside you and pull the trigger for you, you will see it helps a ton.
Now try this on your own, relax go to full draw hit your anchor, relax now release the gorilla grip you have on your release, place your finger on the trigger and open your hand. Apply about 2# of pressure to the trigger and hold it their. Now using your back muscles pull back just like its a back tension release until the bow fires.
I am a very boring person when I shoot, I do exactly the same thing everytime i shoot the bow.
I place my hand on the grip, draw the bow, anchor my left pointer finger knuckle under my ear, touch my nose to the string then look through the peep and align the peep with the sight ring. Then I relax check my bow hand on the grip, breath, relax and drop the pin on the target, let my finger apply pressure to the release and relax my grip, the strap is now holding my bow. When the pin settles I begin to tighten the back muscles and the bow will fire when it is ready.
I hope this helps!