Begin by thinking of a goal that is important to you but that you've kept yourself from attempting, and divide a piece of paper into three columns.

    In the first column, write down all of the things that could go wrong should your attempt fail. Think of the most terrible things possible.
    In the second column, determine ways that you can mitigate the possibility of each of those bad consequences from happening.
    In the third column, think of how you would recover from each of the scenarios you imagined and wrote in the first column.

source: http://www.businessinsider.com/tim-ferriss-on-exercise-to-ov...