question: Complete the next sentence:

How to think like an economist
Use self interest to motivate yourself and others.
When acting on just about anything, people will seek their own benefit. As a result, you shouldn't be ashamed to use self interest to motivate others or to act to benefit yourself.

answer: People will push back or resist doing things if they don't see a benefit in completing the action. For example, your employees won't work longer or harder unless they get compensated (or realize another type of benefit).

question: Complete the next sentence:

How to manage diarrhea at school
Use the bathroom during breaks.
Even if you feel like you don't have to go, try and use the bathroom whenever you have a break and between classes. This may help ensure that you don't experience any flare-ups during class or another inconvenient time.

answer: Give yourself the time you need in the bathroom. If you're late for class, explain to your teacher that you're sick and have to use the bathroom more frequently.

question: Complete the next sentence:

How to throw a curveball
Grip the ball between your thumb and middle finger.
Place your middle finger along the bottom seam of the baseball and your thumb along the back seam. Leave your index finger off the ball.

answer:
Instead of using it to grip the ball, you'll be using it to point at where you want the ball to go. Hold the baseball such that the curves of the seams are close to your palm, with one on top and one on the bottom of your palm.