You have become comfortable in your job and some time has passed since you tested the market. Although you feel confident, you lack insight into how the market has changed. You overstate the value of the skills or underestimate how difficult it will be to make a transition. You leave money on the table not realizing you are worth a lot more. Or you realize during a forced situation that your current employer is overpaying the market rate for your skills. Your relevancy and market value will remain a mystery until you lightly sell your product and see how the market responds. Continually test your relevancy – your life depends on it.