Sketch a day - developing skills

In order to try and push my creativity, throughout march i started doing a sketch a day. i really enjoyed doing this because it made sure that i was doing something creative everyday and working on my sketching and drawing skills. Sometimes i found it very difficult to draw something and sometimes i found it very easy. in the end i was unable to finish the sketch a day in march due to other work getting in the way but it is something i would love to do again and try stick with it.