We have various abilities, present in all rational creatures as in the nature of rationality itself. And this is one of them. Just as nature takes every obstacle, every impediment, and works around it—turns it to its purposes, incorporates it into itself—so, too, a rational being can turn each setback into raw material and use it to achieve its goal.
Meditations, Book 8:35.
This exactly what Dan Sullivan says in the context of entrepreneurship:
All those things that seem to oppose our goals are actually the raw material for achieving them.
This is written on the Strategy Circle tool.
Allow your brain to think of every reason that something won’t work. Thank your brain for its efforts–brains are really good at sensing problems.
Now you know where you need to go–milestone by milestone.