If you are doing something hard (but good for you, like finishing the run, writing a chapter for your book, studying for tomorrow’s exam, etc.) there comes a moment when you want to quit.
An app that has only one function: when you feel you are about to quit, press the button, and you will hear a version of the following: “a bit later, I’ll stop in a little while.” Putting off something into an undefined but near future usually means you’ll never do it. It’s like harnessing procrastination to your benefit – helping you not stop doing what you need to do.