Often when someone tries to grow in faith, whether it's through service or deeper worship, it seems that negative thoughts and events come to push back. With Lent in progress, people may find that problems, interpersonal conflicts or discouraging thoughts crop up more frequently. I've certainly had that happen. All I can say is, trust in God that your efforts to be more faithful are important. Listening to God, worshiping and serving others are always the right things to do. Just don't give the enemy air time. Don't let negative thoughts linger and take root.
Do all you can to keep your focus on praise, hope, and God's loving words. Your spirit will grow stronger for the effort.