"But you will not leave in haste or go in flight; for the LORD will go before you, the God of Israel will be your rear guard."
One of the best things about following Christ is that even though the future may be uncertain and scary to you, God already knows what is up ahead. The God who created all things, including time, knows every single thing that will occur. He can move about freely through time because he is of a higher dimension. He can fast forward, pause, and rewind as he sees fit. He is the author of both time and space.
And all of time is like a single instant to God for to him a day is like a thousand years and a thousand years are like a day. (Psalms 90:4) When God created the universe, he did not create a single moment, but a single story, the difference between snapping a picture and making a movie, however this movie is played out in real time as God is able to step into time and make edits as it plays.
So the LORD, the God of Israel will go before you to prepare your way, so do not worry about the future. And the LORD will guard your back as you press forward so you need not fear your past either. You are free to live and free to be as God made you to be, free from fear and just as God stepped into time, he has enabled us to step with him into eternity.