A priest once told me, “Our self-definition ultimately has to come from God.” Try this: go outside, be silent, listen, close your eyes, breathe, and then pray for the needs of others and yourself.
It may also help to get moving. Go for a run. Then, do something kind for someone else. Make a meal. Visit someone in jail. Take your kids to the park. Grow a garden. Go to church. Volunteer. Visit with a homebound neighbor. Call an old friend.
In addition, here are some prayers for times of worry and self-doubt:
The Merton Prayer from “In Thoughts of Solitude”
My Lord God, I have no idea where I am going. I do not see the road ahead of me. I cannot know for certain where it will end. Nor do I really know myself, and the fact that I think I am following your will does not mean that I am actually doing so. But I believe that the desire to please you does in fact please you. And I hope I have that desire in all that I am doing. I hope that I will never do anything apart from that desire. And I know that if I do this you will lead me by the right road, though I may know nothing about it. Therefore I will trust you always though I may seem to be lost and in the shadow of death. I will not fear, for you are ever with me, and you will never leave me to face my perils alone.
St. Therese of Liseux Prayer from “Story of A Soul”
May today there be peace within.
May you trust God that you are exactly where you are meant to be.
May you not forget the infinite possibilities that are born of faith.
May you use those gifts that you have received, and pass on the love that has been given to you.
May you be content knowing you are a child of God.
Let this presence settle into your bones, and allow your soul the freedom to sing, dance, praise, and love.
It is there for each and every one of us.
Rejoice in the Lord always. I will say it again: Rejoice!
Let your gentleness be evident to all. The Lord is near.
Do not be anxious about anything, but in every situation, by prayer and petition, with thanksgiving, present your requests to God.
And the peace of God, which transcends all understanding, will guard your hearts and your minds in Christ Jesus.
Finally, brothers and sisters, whatever is true, whatever is noble, whatever is right, whatever is pure, whatever is lovely, whatever is admirable—if anything is excellent or praiseworthy—think about such things. Whatever you have learned or received or heard from me, or seen in me—put it into practice. And the God of peace will be with you.
1 Peter 5:7
Cast all your anxiety on him, because he cares for you.