You could put a portion of your monthly allotment into a savings account, and make a pinky-swear never to touch it for any reason. Then, live on what you have left. If you're already doing this, just put more into savings and go from there.
That thread is amazing! I'm fairly decent at limiting my spending (leaving my card at home), so this is a major improvement lol.I loved this thread on budgeting:
The post by ficbot on using jars for budgeting was really helpful
If you search "budgeting" on these forums there are other good ones!
I'm now where I question the need for every purchase.
Stay on the perimeter of stores as much as possible is one good piece of advice.