If you can invent a new mobile application, what will it be?

Yasmin Subba, 16, Sha Tin College

I'd invent a Yolo (you only live once) app. Does it sound cheesy? Read on.

How it works: this app would have a database of random things to do. For example, 'go camping this weekend; ask your crush out; learn how to surf' or even 'quit the job you hate'. Every day, one random thing to do will pop up on the Yolo app and you'd have to do it.

The best thing about this app is that it's useful to anyone who can use it. If you're aged seven, instead of being bored at home, you could be out exploring a hiking trail. If you're 30, you should take up a new hobby so that you're always learning new things and meeting new people. If you're 80, you need not feel that you're too old to experience new things - you're still alive, so you should be making the most of it.

This might be a simple idea, but I think people really need to start living life the way they want to. I think the main problem is that people 'wish' that they could do something, but lack the encouragement and drive to follow through with their desires. I feel that, though it is small, an app could make a difference by providing people with a nudge in the direction towards happiness.

'You only live once' is an important concept to me (it was even mentioned in one of the past Brain Game rounds). Life is too precious to waste wishing you were somewhere else.

That's what Yolo is there to remind us, and a Yolo app would certainly help to keep us motivated.