"Trust in God" is the most important of the 8 laws of health. If you don't trust in God, but follow the other 7 laws of health perfectly, you still won't be perfectly healthy! Proverbs 3:5 says " Trust in the Lord with all thine heart and lean not on thine own understanding." We need to place our trust in the one and only God, the creator of the universe.
Worry can take its toll on your health. The best thing would be to not worry but to place your trust in Jesus! He is in control of all situations, and will work everything out for good ! Romans 8:28 says " And we know that all things work together for good to them that love God , to them who are called according to His purpose." If you trust in the Lord with all of your heart , and love Him, everything will work together for good. God always has a plan for your life. It may seem that the bad things that are happening aren't necessary, but trials are necessary to refine our characters!
There's a saying that goes like this : " If you're going to pray , why worry? If you're going to worry , why pray?" That's so true!
1 Peter 5:7 says: " casting all your care upon Him , for He careth for you!"