How to get over anxiety and deal with it patiently? What is the correct path of life?

Find your hobby
When you feel anxiety you can do your leisure activity
Reading book
Doing exercise
Listening music or whatever
What's your favourite thing
Maybe you can keep diary

You did not show us the image of the burger, but i shall try to answer as best i can.  when purchasing food, always consider the ingredients as well as the person who prepared it. consider if they were hygienic people or not, in case the burger was infected with bacteria. no mortal should place an infected burger into their mouth.