This is Paul Mason’s setting for the Third Sunday in Lent Year C, from Psalms for All Time. I am working from the first edition, but you can buy the updated, upgraded version, which is now the first volume of three.
As a psalm, it can be used for Ash Wednesday and Lent more generally. As a hymn, he suggests it for Gifts, which sounds about right.
The text is in your missal or they are same words set by Kate Keefe.
This song is meant to be “joyful and reflective”. Not sure if my backing does both.