A definition of the word “Inertia” says it is a tendency to do nothing or to remain unchanged.
People are prone to inertia, especially when it is time to take action. Instead of taking immediate action, they remain inertia or procrastinate.
Do you know that it actually takea a lot more effort to get pass inertia than when the momentum of action is already on?
Imagine a trolley filled with some heavy stuff. It stands there motionless (inertia) and if you were to move the trolley, you would need to expend quite a bit of energy to move it. However, once the trolley is already in motion, you do not really need as much of energy to push it.
In other words, starting anything could be tough at first but gets easy as time goes by,