Game Talk
PSA: stop paying full price for games you'll play in 6 months
Boring but useful one. If you're not playing on day one, you're just pre-paying for a game that will be cheaper later.
What I do: wishlist everything, turn on sale notifications on whatever store you use, and check a price history site before buying so you know if a "sale" is actually a sale.
Also set a monthly limit. My designer brain likes a spreadsheet with colours, but a note on your phone works too. Saved me a lot last year.