Ant is unique in two ways, first, it always knows where it wants to go, second, it will keep try to find a way to get there, no matter what.
If you put a pebble in the way of an ant, the ant will first try to go around it, it tries one way, and then it tries the other way.
If that doesn’t work, the ant will try to climb over the pebble.
If for some reason it cannot climb over the pebble, the ant will try to lift the pebble, even though the pebble is hundres times heavier than the ant.
If by its own strength the ant cannot lift the pebble, it will try to get its buddies to help.
If with all the ants working together, they still cannot lift the pebble, they will start digging an tunnel under the pebble.
If all else fails, the ants will start eating through the pebble.
How long will they try? They will keep at it until they get through or the last one of the ants die.
One thing they will never do, is quitting.
Source: the art of exceptional living by Jim Rohn