Motivation is like an airborne disease... if you get motivated it forces others to motivate even if they don’t want to. It shows them by example what is possible with hard work. Sprinkle in a little monkey see monkey do and wa-la!!!
People need to know why they need to work harder. If they see you doing it they will feel guilted into being better or trying harder as well. Sure sometimes it’s out of competition but other times it’s just out of a feeling of needing to rise to the occasion.
Never forget the impart your actions have on others. Great actions lead to great consequences.