Doing hard things

I was reading this article and I got excited -- and then I got to thinking. When was the last time I did something hard?

When was the last time I did something difficult, something challenging, something that grew and stretched my faith in a big way? When was the last time I allowed God to totally morph my life?

"We can't just go on being ordinary, decent Christians, giving God part of our lives while holding back the rest. Either we are hatched and learn to fly or we are a dud that will soon start to sink. The ironic thing here is that although the hardest thing -- the almost impossible thing -- is to hand over our whole selves to Christ, it is far easier than what we are trying to do instead."

- Do Hard Things, Alex and Brett Harris

Any advice? How do we, on a daily basis, do these hard things the Bible commands us to do?