(Sorry to do this as a two parter, but I don't have long now, and if I don't start it, I never will!)
I have enjoyed God's Peace and Confidence since I asked him to be the boss of me, about 12 years ago.
I know what a wonder His Peace is, in the world we live in, and how it affects me and makes my life simpler. I think it's linked to the same thing Paul is talking about in Philippians when he says 'Do not worry...Tomorrow has it's own worries..." Etc. God's Peace is the 'How'.
That's why it's one of the Fruits of the Spirit ; if you have the Spirit working in you, you should expect to see the fruit, right?
Over the last two months, I've started to lose my Peace. Not completely, but it's slipping. Oh, and I don't like it!
I'm starting to see behaviour I don't like in myself, like shouting at car drivers who cut me up. Not unreasonable? Well, maybe, but it's not my style.