You have to stay in your office (most likely home office) for several hours and do some work (or learn). You have to complete this work today, but you always get distracted.
The solution is – self-bondage! Limit you ability to move, eat, talk, listen, touch yourself and do your chores! After 3-4-5 hours, or to be more precise when the ice-lock decides that it’s enough, you will be released. Also a good method to loose weight if you have tendency to munch on something while working/studying.
So, these are the requirements: