I'm using 30 day improvement sprints as a way to sharpen my skills. I pick a focus to work on and I committ to improving it for a 30 day timebox. Committing to 30 days of improvement in a focused area, is easier to swallow than changing for life. However, improving an area for 30 days, is actually life changing.
With 30 days, persistence and time are on my side. It's a big enough time box that I can try different techniques, while building proficiency. Using 30 days makes working through hurdles easier too. A lot of the hurldles I hit in my first week, are gone by week 2. Little improvements each day, add up quickly. I look back on how many things I tried for a week and stopped thinking I hadn't made progress. The trick was, I didn't get to week 2 to see my results. Lesson learned!