Most people know the seven gifts of the Holy Spirit of wisdom, understanding, knowledge, counsel, fortitude, piety, and fear of the Lord. I think what is often overlooked are the twelve fruits of the Holy Spirit. These are charity, joy, peace, patience, kindness, goodness, longanimity, mildness, faith, modesty, continence, and chastity.
The great feast of Pentecost is an opportunity to ask for both the gifts and the fruits. One of the fruits that stands out the most to me is peace. God's presence, the indwelling of the Holy Spirit in our souls, brings the only true and lasting peace to our lives. Peace is the foil to anxiety. I have a feeling it is easier to worry than not to, but harder to be at peace and worry at the same time.
If peace is a "freedom from disturbance" as a literal definition, then the peace that God gives is true freedom indeed. He is the calm amidst the storm and there is not a single person on this earth who does not wish for that calm. What is unfortunate is people often look for it in ways it cannot be found. So if the source of peace is God's grace, then we carry that with us in all moments of our life when our will is united to His.