I'm studying physics, and I've covered calculus and general physics. My problem is: -My critical thinking is really not good. -Whenever someone is asking me about say, object A, I would answer something that is not related to object A (I'm not aware of it until that person tell me that I haven't answered his question/ I'm out of the topic). -I tend to forget the things I've learned in say, two weeks time. -Typical problems of poor students Do anyone know what my problem is? I'm not sure if this is just the common problem i.e. lack of focus or awareness. I feel that I'm focused in what I'm doing but still, somebody would tell me that I'm not in focus, etc. Can somebody recommend me a book or any tips on how to resolve and improve my skills? Thanks.