Working mom Katie Oelker learned much of what she knows about money from her father, an accountant, while growing up and observing him advise others at the big retail corporation where he worked. As an adult, she received tailored advice from him with her future’s security in mind. Start investing for retirement as soon as you are able, was one thing he told her. “My dad encouraged me to invest diligently right after college, and he was proof the strategy works,” Oelker explained to Business Insider. Her father retired at 54 with $750,000 in the bank. Having followed his advice, she was able to take a break from work to enjoy raising her children without concern over her finances. After graduating from college, Oelker started setting aside 10 percent of her salary each and every month into her employer-sponsored retirement fund. She also opened a Roth individual retirement account (IRA) …