#1 See the value of peace. Maybe you need to take peace a little more seriously? If you don't think it's a big deal to lose your temper, worry all day or get stressed out, you may have underappreciated the gift of peace more than you realize. First Peter 3:11 (KJV) tells us to "Eschew evil, and do good; let him seek peace, and ensue it."
#2 Take a serious inventory of what you spend your time on. Do you have an unsustainable life? Many of you reading this have way too much on your plate, but you keep saying yes to things and filling up your calendar. Remember that Jesus called us to be fruitful, not busy. So cut away the branches that are not bearing fruit.
#3 Trust God. Believers in Christ are supposed to believe, right? That means we trust what He says in His Word and completely give everything over to Him. When we do that, we enter His rest (peace). Proverbs 3:5 (KJV) says, " Trust in the Lord with all thine heart; and lean not unto thine own understanding.."
#4 Make a decision not to be a people pleaser. It's not possible to keep all the people in your life happy all the time. This doesn't mean you can act rudely toward them. Just don't try to please another person at the expense of displeasing or being disobedient to God. Live to please God first.
#5 Mind your own business. I've learned that usually, the less I know about other people, the better off I am. Being nosy and spending energy trying to learn what others are doing or saying produces anything but peace in life. First Thessalonians 4:11 (KJV) tells us to "Study to be quiet, and to do your own business, and to work with your own hands, as we commanded you;"
#6 Let peace be the umpire of your life. If you are thinking about doing something, but you don't have peace about it, don't do it-because if it's not peaceful, it's not God.
#7 Do whatever you can to work toward simplicity. I've been working on simplifying my life for awhile now because I learned that the busier you are, the more vital it is to have simplicity. This means sometimes it's best to let things go instead of starting a war over something petty. Also, it might be simpler to not own so much stuff. Trying to take care of too much can just overwhelm and frustrate you.