You went astray, and did not come back because you were ashamed to. It would be more logical if you were ashamed not to return.
Discouragement is an enemy of your perseverance. If you don’t fight against discouragement you will become pessimistic first, and lukewarm afterwards. Be an optimist.
Persevere and you will rise. Remember what a spiritual writer has said: your poor soul is like a bird whose wings are caked with mud.
Suns of heaven are needed and personal efforts, small and constant, to shake off those inclinations, those vain fancies, that depression: that mud clinging to your wings.
And you will see yourself free. If you persevere, you will rise.
This excerpt is from Josemaría Escrivá’s book The Way.