To dream that you are behind someone, suggests that you are offering your support and encouragement for someone. Alternatively, it refers to emerging unconscious thoughts and feelings. To dream that you are left behind, represents feelings of rejection or not fitting into a group. It may also highlight fears of not being able to keep up. You are questioning your abilities and/or may not be utilizing your full potential. If you left something or someone behind, indicates that you are ready to let go of the past and move forward.