I picked up this gospel focussed prayer from JD Greear, author of several books including Gaining by Losing: Why the Future Belongs to Churches That Send.
The Gospel Prayer
In Christ, there is nothing I can do that would make You love me more, and nothing I have done that makes You love me less. Your presence and approval are all I need for everlasting joy. As You have been to me, so I will be to others. As I pray, I’ll measure Your compassion by the cross and Your power by the resurrection.