What actually helps with repeated small impulse purchases that make saving harder?

I’ve been thinking about how some people don’t really have a major income problem, but still struggle to save because of repeated impulse spending.

Not big shopping sprees — more like:

-little treats

-convenience buys

-emotional spending

-cheap things that keep repeating

Individually, they don’t seem like a big deal.

But over time, they make saving much harder than expected.

For people who’ve dealt with this, what actually helped the most?

-tracking what category the spending fell into

-noticing what triggered it

-using a waiting rule before buying

-something else entirely

I’m curious what made the biggest difference for you in real life.