Motivation is the reason.
Motivation is the reason that some will do more, and act a certain way. When you are motivated you will do more work, if you feel that there will be a bonus or promotion involved. If you want to be successful, you have to stay motivated.
Is there something that inspires you during your difficult times? Is there a quote, or an item, that will lift you up when you are feeling? Some people find comfort in the little things that will make them feel better in life. There are crosses, and angels, and other spiritual things that people who on to.
What motivates me are the things that can inspire you. There are the success stories such of someone who over came issues in life, the person who does something that was not expected, the young people of today who will be making our lives better for the future. Even the amazing stories of diets, or weight lose can show you how with dedication your life can be changed. What is motivating you, the kind of things that keeps you to go when you are feeling down?
Try finding something to motivate you.