Hello Miriam,
Welcome to christianforumsite.
Be alert to testimonies of believers who have been led through a path of obedience from discouragement and perhaps despair.
Some Bible verses that have helped me answer this question for myself are 2 Corinthians 10:5, from which Abdicate posting just above is inspired. If you read that passage within its context, it talks about Paul working very hard to make every person's thought captive to Jesus Christ. Thinking on this verse in light of other passages of Scriptures, such as Philippians 4:8 and 1 Peter 2:1-2 led me to apply 2 Corinthinans 10:5 to my thought world, which affects my emotions...
Sin can hinder our desire from feeding on God's Word (1 Pi 2:1), but that's an important part of where growth comes from.