The hymn says, "O what peace we often forfeit, O what needless pain we bear, all because we don't carry everything to God in prayer."
Prayerlessness, is one of the many ways we forfeit the peace of God. But Elisabeth Elliot has a list of other things that causes us to loose and find our peace:Tranquility:
~ resent God's ways.
~ worry as much as possible
~ pray only about things you can't manage by yourself
~ refuse to accept what God gives
~ look for peace elsewhere than in Him
~ try to rule your own life
~ doubt God's Word
~ carry all your cares
How to find your peace
~ Don't worry about anything (Phil 4:6)
~ "In everything make your requests known to God in prayer and petition with thanksgiving . Then the peace of God ... will guard your hearts." (Phil 4: 6-7)
~ "Take my yoke upon you and learn from me...and you will find rest." (Matt. 11:29)
~ "Peace is my parting gift to you, my own peace, such as the world cannot give." (Jn. 14:27)
~ "Let the peace of Christ rule in your hearts" (Col. 3:15)
~ "May the God of hope fill you with all joy and peace in believing" (Rom 15:13).
~ "He cares for you, so cast all your anxiety of Him" (1 Pet. 5:7).