Yes, it’s true that our culture values hard work, but it’s also true that there’s rarely a direct link between hard work and increases in pay or promotions in many American companies. To put it simply, if you want a raise and/or promotion, you have to work hard, make a measurable impact and ASK FOR IT.
Challenge yourself to consistently raise your profile and make sure that others see the impact of your work. When the time comes, directly state your desires (a raise, change in role or responsibilities, a promotion, etc.). When is the right time? Probably last year, so act now. You won’t benefit from staying silent.