anxiety: an uncomfortable feeling of nervousness or worry about something that is happening or might happen in the future
noun: Children normally feel a lot of anxiety about their first day at school.
Belief: the feeling of being certain that something exists or is true
Noun: His belief in God gave him hope during difficult times.
Courage: the ability to control your fear in a dangerous or difficult situation
Noun: They showed great courage when they found out about their baby's disability.