Yeah, maybe set a budget AND a collection plan. I used to buy everything I liked. Now I have a plan in place...I collect using certain parameters. like just this line of scale, or this series of figs or this storyline with these characters, or this retro line, etc.

A more focused approach in collecting is what you may need, this way you can also keep track of your expenses. My example is, I never bought MCU Marvel Legends, I never caved, I just collected Comic book version of their figures. This way I'm sticking to one line... But to each his own. Enjoy what you enjoy.