Have you ever noticed those little holes outside on a cement floor directly under a roof? You know holes are there because of the water drops right? Those holes are made on that cement floor by the consistent water drops.
The key word there is consistence. As you must have heard, little drops of water makes the ocean. As unbelievable as that might sound, it's actually not far from the truth. It doesn't literally mean the ocean is entirely made from drops of water, what that statement means is that as long as you keep doing those little things and taking those little steps towards achieving a set goal, no matter how long or hard it may seem, you will definitely achieve that goal.