Ask Big : Ask What You want

If you want people to just say 'yes' to you. Whatever you ask may be favor which they cannot say no to. That must be first applicable to them. Imagine that you ask a friend for a favor and he just said no. We will feel bad because he said no and we have to ask others person for it. You want to complete your long assignment. Fist thing you need to do is ask of a long thing which they will say no.

You ask your friend to write your assignment ( it is a long task) and he said no. But the main thing you want is the drawings in the assignment because it is hard for you. After rejecting the first one they will feel bad use it to your advantage ad ask for the main thing you want.

 You want him to draw some things in your assignment. So, ask him this small favor and he will just day yes. Because When you ask for a small favor to people in the first place they will likely say no. But when you ask for a big thing and get rejected and then ask for the small thing they will say yes. This is a manipulation to make people do something for you. Remember to use it wisely.