Life itself is a journey in which we focus on one destination at a time. Each destination that we reach is replaced by the next leg of the journey. No one can see the final destination clearly but we can know the direction in which we need to travel.
There is no Google Maps App that tells you how far your goal is and what obstacles you will find along the way. But there are others that have followed the trail that you are on, who can act as guides for your journey.