Luke 10:40-42 NIV
"But Martha was distracted by all the preparations that had to be made.... but few things are needed—or indeed only one..."

We have many priorities in life, and to list it up: 1. Food 2. Clothing 3. Shelter
These 3 is what we prioritise the most in our lives.  We worry over these things and we fail to see the most important just like Martha. There is only one thing that we need in our life, we need to have God in our life. 
Psalm 23:1- The Lord is my shepherd, I lack nothing.
Colosians 2:11- We will be complete in Christ.

Worrying is a part of our life, it's a characteristic of a human, it is a human nature and it cannot be changed, but what's important to know is where we can put our worries. God will accept with open arms all our worries in this life, we need only to prioritize Him above all the list.