Have I not commanded you? Be strong and courageous. Do not be afraid; do not be discouraged, for the Lord your God will be with you wherever you go. Joshua 1:9 NIV
Nowadays we are faced with a lot of things which are distracting and overwhelming us, which makes it really hard not to fear.
God is not asking us, but commanding us to be strong and courageous; not to fear, nor to be discouraged.
Trust Him, because He will not leave you. He promises that He will be with you through everything the unknown future holds.
God always keeps His promises; you can take Him up on His word.
He is faithful, therefore have faith in Him.