Sometimes there are things in our lives that God desires for us to do that are hard. And if we are not careful we will allow ourselves to succumb to fear of the unknown or fear of what others may say or think about us. However, God calls us to do things that may be difficult or uneasy.
We find the apostles having experienced fierce opposition to teaching about Jesus Christ, however, they find a way to move into what God has them do rather than remain silent like some people want them to do. In order to just do what God desires takes resilience, remembering God's work in your past, and recognizing God's power.