I found this lovely prayer by the great British man of letters, Samuel Johnson:
Almighty God, the giver of all good things, without whose grace all wisdom is folly:
grant, I beseech Thee, that in this undertaking thy Holy Spirit may not be withheld from me, but that I may promote Thy glory, and the salvation of myself and others:
grant this, O Lord, for the sake of Thy son, Jesus Christ. Amen.