Perhaps you'd find this prayer from the Ordinariate's St. Gregory's Prayer Book useful:
Lord, bless us this Lent — let us fast most truly and profitably—by feeding in prayer on thy Spirit — Reveal me to myself in the light of thy holiness — let me not think I have knowledge enough to need no teaching —
Wisdom enough to need no correction—
Talents enough to need no grace—
Goodness enough to need no progress—
Humility enough to need no repentance—
Devotion enough to need no quickening—
Strength sufficient without thy Spirit—
Lest standing still I fall back for evermore—
May my whole effort be to return to thee — make it serious and sincere — persevering and fruitful in result — by the help of thy Holy Spirit — and to thy glory, my Lord and my God. Amen
The odd punctuation is copied from the book. I don't know the reason for it.
Note: I did not hear "Ashes" yesterday. So I guess I'll need to do some extra little penance to make up for that.