How can I master the breaking condition in recursion?

To master the breaking conditions in recursion, you need to understand these two things first:

1. figuring out when the function should stop (usually with an if check),

2. and making sure it actually stops — usually with a return.

After this, you need to ask yourself "what's the smallest or simplest case where I don’t need more recursion?". This will serve as your base case. Then make sure the function hits that eventually.

It gets easier the more you practice. Try simple stuff like factorial or summing numbers — they help you build that instinct.