--Tao Te Ching, Chapter 63 (Le Guin translation)

You can understand this from a few angles. One is to contemplate how any huge achievement is built from small steps over time.

No matter how mysterious or superhuman someone's performance may seem, they reached that level of skill by some progression, where each new challenge built upon what was learned before.

So if you want to achieve something great, figure out how to break it down into a progression of small steps. (The flip side of this is that if you want to influence the outcome of some project, it's a lot harder when the project is almost done.)

If you have no idea where to begin, start with finding role models who have achieved similar goals, and study how they did it.

A different angle is to contemplate how the small things you're doing every day are already part of some progression, even if you don't realize it.

Chapter 63 ends:

The wise soul, by treating the easy as hard, doesn't find anything hard.

All your actions contribute to a life trajectory, and you can change that trajectory by changing the presence of mind you bring to your actions.

What small shift could you make today, that you might look back on with gratitude, years later?