Managers spend a lot of time building plans and setting goals. You can increase your chances of success by taking advantage of your brain's chemistry. When you succeed at something your brain releases dopamine, a pleasure chemical, which reinforces your learning and your desire to repeat it. When you don't succeed, your brain doesn't retain and reinforce that behavior. So instead of setting great goals that are difficult to reach, we need to break them down into smaller steps that are achievable.
According to a recent Business on main article "achieving your goals isn't just about hard work and discipline" and "you can jump-start your productivity to create a winning streak". This is because "the more times you succeed at something, the longer your brain stores the information that allowed you to do so well in the first place."
For the fundamentals of planning read Business Planning Made Simple.