But you should first sign up with the company's 401k plan. You could leave the funds in a 401k account if your employer's investment firm allows for it, too. That may sound basic, but it is the step most often missed by the average American. That tendency coupled with our cultural reticence about money matters, spells trouble for planning your 401k rollover account. You will also have to penny pinch when it comes to entertainment and dining out.