Investing isn't hard, but that first step can be. But women are actually better investors than men. This week we're cutting the excuses with Kathleen Murphy, the President of Personal Investing at Fidelity Investments. Murphy breaks down how and why to start investing in your 20's, 30's, 40's, 50's, 60's and beyond. In Mailbag, questions on gift cards, how long to save paperwork for taxes and whether millennials need life insurance.