The proverb "Haste makes waste" means that one may delay the time to complete one thing if he rushes to do it, because he may neglect something important in the process and has to do it again from the beginning. Therefore one should do every step well.
There is no shortcut. Just like remembering words. If you want to stuff all the words into your brain and mot to revise them, you will remember nothing. So don't be hasty. Haste makes waste.