As I understand it, Lent is a holiday where we celebrate the scientific method by changing exactly one variable in our lives for 40 days.
As I understand it, the other main point is to focus on giving up one thing that may be acting as a superstimulus, the restricting it to 40 days is a great way to make it easier to temporarily quit.
As I understand it, the other main point is to focus on giving up one thing that may be acting as a superstimulus, the restricting it to 40 days is a great way to make it easier to temporarily quit.