It is more than possible to stay in peace at all times. All we have to do is keep our mind stayed upon God and trust in him. When thoughts come that try to get our mind on the situation or what is going on around us, we have to reel our thoughts back in and put our mind back on God, back on his promises, back on his word and make a firm decision to remain there. As long as we do that, we will remain in peace. It is only when we receive the thoughts of the enemy that we come out of peace. His thoughts are not our thoughts. Our thoughts line up with Gods thoughts and as they do, we are able to remain in peace.