Challenge: Experience the sun rise for 365 days.
From the 24th of February 2016 to the 24th February 2017, I challenged myself to get up every morning and take a picture of the sunrise. This was a bit of a task, but I managed it with just 4 missed days. 1 of those because I changed phones, and lost the photo in the transfer - I was up!!
2016 was a year of mamoth travel experiences for me - including a trip to Greenland during the summer. The sun set at around 2 AM and rose again at 3.15 AM. That was indeed a challenge!
But I managed an entire year, and the benefits from this experience are immeasurable.
You should try it!!