Let your moderation be known unto all men. The Lord is at hand.
Be careful for nothing; but in every thing by prayer and suppplication
With thanksgiving let your requests be made known unto God
And the peace of God which passes all understanding shall keep your hearts and mind through Christ Jesus.
We recieve the peace of God:
Praise---Rejoice in the Lord always, No matter what we may be going through God is always worthy of our praise. David wrote I will bless the Lord at all times His praises shall continually be in my mouth,
Replace complaining with Rejoicing
Trust---Be careful for nothing, don't worry, but prayer and present you request to God, by thanking God for what He has done, is doing and will do.
True peace can only come from a real and personal relationship with God