How to do a low/no buy when you're still new to makeup?

Hi, I've just seen on here all sorts of posts about no buys, low buys, and decluttering, which I think is very healthy, but I'm curious how I should apply that when I'm relatively new to makeup (didn't start wearing it consistently or building up a stash until this past August, but I really enjoy it now) and don't have that large of a collection to begin with.

I don't feel like I have a problem (I only ever really buy small amounts of makeup every couple of months, and my entire stash fits in one reasonably-sized dresser drawer) but my main concern is not falling down a slippery slope into addiction.

I feel in my situation it should be less about not buying anything and constantly shedding products and more about making shopping experiences meaningful, being selective about what does enter my collection, and getting rid of things as I learn more about what I do and don't like. Curious about what advice more experienced folks might have for me on how exactly to do this. Thanks!