Practice and preparation would make swimming and completing difficult assignments much easier. Rather than spend 10 hours banging your head against your desk, y

Practice and preparation would make swimming and completing difficult assignments much easier. Rather than spend 10 hours banging your head against your desk, you could spend that time completing easier problems with increasing difficulty or re-reading the text. Sure, some skill development benefits from jumping straight into the deep end, but a more deliberate approach is probably more effect in the long run. "Give me six hours to chop down a tree and I will spend the first four sharpening the axe."