My savings comes out the very first thing. I set up all my bills online with my bank and most are the same every month. My electric and gas are averaged, so I know what they are every month.
One thing that might help would be to write down all your fixed expenses and see what the total is. Then you would have a number for your disgressionary income is. Then you could plan what you were going to do. When I worked in the city I always took my own lunch, sat and people watched and took a short walk. I'll bet you'll be amazed the amount you spend eating out-and we all know where it ends up

Sorry, couldn't help myself