Works of faiths are not always entangled with every thing we want only of ourselves. Faith also is works to assist others. Although one will want good of their own, faith can be a reward you share openly with others to encourage as well.
Others will also roar at your faith!
"Everything is permissible"-- but not everything is beneficial. "Everything is permissible-- but not everything is constructive. "Nobody should seek his own good, but the good of others." --1Corinthians: 10:23NIV