“God, of thy goodness, give me Thyself;
for Thou art enough for me,
and I can ask for nothing less
that can be full honor to Thee.
And if I ask anything that is less,
ever Shall I be in want,
for only in Thee have I all” (Julian of Norwich, Revelations of Divine Love)
I can’t think of a single thing to add to that prayer. It covers everything. It’s a good, short prayer for when you have no words of your own.