The answer is EVERYTHING.
The only way to survive is to keep moving ahead even though you didn't see any palaces or treasures rewarding your life long journey.
you might find some trees to rest under and some ponds to quench your thirst but you will have to fight for it as there will be so many others searching for it.
You have to fight for it because there will be only one tree and one pond in your path and it will not be possible to share it because it won't be enough for the millions of others who traveled in the same path as you.
You will struggle so much to claim a small place under the tree to rest temporarily so that you will forget or forego your dream.
There is no turning back.
Make your own path and just go for it.
Then everything will go the way you want.
Nothing to spare.
Nothing to lose.
Embrace the pain and Move forward.