If we were going to guess what's on your list, we'd say that family, pets and being alive will be near the top. Maybe having a great school and a brilliant teacher?
And we bet some wonderfully weird things crept into your top 50 too... flying in a plane, electricity, Wi-Fi, chocolate, soft loo roll, Cornish pasties, hot water bottles, rain, socks, toothpaste, hash browns, the ability to see and hear, oxygen, cows...
It's funny how quickly we get used to the good things in our lives. After a while, they stop feeling special because they become part of everyday life. We stop noticing them.
Most people spend a massive amount of time grumbling about what they haven't got. Positive people spend more time being grateful for what they have got.
So keep your list somewhere you'll see it. Every now and then, stop for a moment and remind yourself just how lucky you really are.
And keep coming back to your list and add to it whenever you notice something new to be grateful for. You might discover there are far more than 50 epic things in your life.