Running in a dream often carries urgency without a clear finish line -- effort that isn't translating into progress, or a sense that you're working hard just to keep pace with something. It can reflect a real situation where you feel like you're putting in energy without seeing the results you expected.
Mercury in the sixth house of a nativity, the native shall change from one religion to another, & will have his felicity in part impedited by reason of his inconstancy. - William Lilly (1602.-1681.)