Perhaps try to categorize the types of problems that are giving you trouble and really narrow down the core concepts that are the issue; you either might have n

Perhaps try to categorize the types of problems that are giving you trouble and really narrow down the core concepts that are the issue; you either might have never learned the appropriate prerequisites, or simply just learned it from a different angle, if you will. That said, some peoples brains are just wired differently. You might find other difficult things easy, that others who completed the easy ones struggle on.