1. Quit smoking weed.
2. Got rid of cable. Haven't had it for 7 years and don't miss it one bit.
3. Limit eating out. Fast food is just expensive as eating at a regular restaurant these days. A sandwich, bag of chip, and an apple from home costs what $1.25? Compared to $7 for a value meal. Economically makes no sense.
4. Deposit a set % of my paycheck into my retirement account, then savings, the remainder goes to my checking. Usually don't have more than a couple of hundred dollars readily available to me. If I don't have enough in my checking to buy something I have to transfer the funds from my savings which makes me think about how badly I want that item.