Matthew 9:12-13 NIV [12] On hearing this, Jesus said, “It is not the healthy who need a doctor, but the sick. [13] But go and learn what this means: ‘I desire mercy, not sacrifice.’ For I have not come to call the righteous, but sinners.” https://bible.com/bible/111/mat.9.12-13.NIV

If you've never fasted while reading his Word, I highly recommend it. Just a light fast; postpone one meal. It creates a powerful bond with the Lord that makes you feel his love and comfort. It's quality time with the Lord. Also say the Lord's prayer over and over again.

I'm also struggling with lust. It's a difficult battle and it's painful for many. I've fallen millions of times and cried a thousand times. I'm just barely managing to let go for a bit. I'm doing well. God sees your heart and your struggle. You are not alone. The enemy attacks where it hurts most, but Christ already won on the cross. Don't give up. Read Psalm 51 and pray sincerely. Every day is a new opportunity. God hasn't let you go. God never tires of forgiving you when you truly repent. Cry before Him, but don't stay on the ground. He lifts you up. Seek spiritual help, fill your mind with the Word, and keep fighting. You can do it in Christ