It's critical for your peace of mind to get what Jesus was saying in the heart of the Sermon on the Mount.
At the end of Chapter 6, Jesus explains how we can be released into putting God first and seeking Kingdom life. It doesn't happen when you're still anxious about provision. Yes, it's scary - but faith is like that. Trust that God really loves you and - really - He will provide for your needs. Then feel the peace of that! And then you will be released into seeking His kingdom life. Say goodbye to fears, anxiety and striving; and say hello to peace, provision and living securely by faith.