It's today that you have to have faith for! It's today that God has provided the strength for! "As thy days, so shall thy strength be!" (Deu.33:25) God gives you power for the hour, grace for the trials--at the hour and when it comes--not before! You don't have to have faith for tomorrow, today. If you trust God and have faith, then you know your Heavenly Father loves you and He's going to take care of you and yours!
Jesus said, "Take therefore no thought for the morrow: for the morrow shall take thought for the things of itself." (Mat.6:34) Quit worrying about tomorrow! That's a commandment! It's not optional. It's not something that's just good advice--it's an order! When tomorrow comes, God will take care of it!