What mortgage, car payment, etc. Lifestyle can you afford with a $100k gross salary?

Let's say you make $100k and live in a low COL city like Dallas or Houston, and you want to be as financially responsible as you can, meaning you don't want to rack up too much debt, no credit cards, and just try not having trouble making ends meet.

What should be your monthly budget for your mortgage payment, car payment, 401k/IRA savings/retirement savings, savings outside of retirement, "blow money" for entertainment, etc?

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