Whoever is willing to make great changes is often thinking in difficult projects that need to be accomplished. On the other hand, our ability to do things is by breaking long hour tasks into small “doable” tasks. Say you wanna write a book, you would start by the idea, write a few chapters, choose a title, make a summary, make improvements…and after all these steps you will have it done.
Think big, but start with the basics. Sometimes, great things are just small things that nobody is looking at.