It is an understandable way to think for those of us who get discouraged when we sin (and I’m also a member of that club). I wouldn’t call it stupid, but mistaken. We should pray as soon as we realize we have sinned, ask for God’s forgiveness, mercy and the grace we need to do better, and then continue with our prayers until our next confession. When it comes to prayer and the thought of quitting, don’t give up, and don’t give in!
Keep up the prayer no matter what!
St Padre Pio said:
“Those who pray are safe,
Those who sometimes pray are in danger,
Those who never pray are lost.”
He was warning the dangers of not praying.
The Catechism says:
“Prayer is a precondition set by God for obtaining grace.”
You can only obtain God’s grace through prayer.
So, no prayer means no grace.
Jesus told St Faustina,
“Heaven is not given to the perfect, it is given to those who persevere.”
It means that even the saints were in need of God’s Mercy and of confession.
And so are all mankind in need of God’s Mercy too.
It’s not how many times you fall, but how many times you rise after you fall. And continue praying and going to confession.
Prayer and confession will eventually change you.
Sometimes doing little penance is needed too,
Jesus told his Apostles about a possessed person they prayed over, “This one can only be cast out through prayer and fasting.”
So little things like, on Wednesdays and Fridays, not using Facebook, or not using the Internet unnecessarily, or not watching TV on those days, or on a Friday giving up sweets for Jesus.
Little penances can work miracles too when offered to God. Because your soul is telling the mind, the soul is in charge, if you can say no to earthly things through little penances, you can say no to venial sins that you wish to get rid of.