Q. I’m supposed to go on maternity leave in the new year, but I’m worried my boss will realize the company can survive without me. I’m concerned that I’ll be spending what should be a joyous time with my new baby fretting about being replaced at work.

Mary Lynne: I would like one dollar for every time I worried about a future that seemed deadly but never happened and robbed me of my present moment of joy. I purposely stopped worrying years ago, and so can you.

First, look at the facts. There are laws that protect women’s jobs when they take maternity leave. Second, you want to consider the adverse affect that worry has on your job performance. If you feel insecure about your position, you won’t be at your best. Think about the value you bring to the company. That’s the emotion that leads to optimum performance and success. Negative feelings have an adverse effect on performance; positive feelings enhance it.

Third and most important: Motherhood is one of the ultimate joys in life. Unnecessary worry will take that joy from you. Don’t do that to yourself. When at home with your new baby, remember that worry is a useless emotion; it puts you at a disadvantage. Let it go by noticing it and then bringing yourself back to the present moment.