Righteousness gives birth to worship, NOT vice-versa. We don't accomplish worship by deciding to perform a ritual, whether that is fasting or attending church, or anything else. Rather, our relationship with Jesus gives birth to our worship.
It is the love we share (by our actions, not just words!) that makes people believe we are sincere. It is how much we sacrifice for each other that opens the door for the gospel message. It is by bearing each other's burdens that we fulfill the Law of Christ.