Memory is a vital part of both machine and animal. Without it we as humans would not have any consciousness and the ability to create. Animals would not be able to survive.
Begin early; decide a career path for yourself only after determining the strengths, you goals, and the kind of course that suits your aptitude. The key thinking, then, is: think about your strengths, about where you want to go, about what style of course suits you best and start to plan your career trajectory early