Increasing income is always more important than cutting expenses

Never forget how important it is to always be seeking a higher salary. You can only trim so much fat off of your expenses without significantly affecting your QoL, but you can always make more money.

Post-tax making 100k vs 50k does not equate to doubled savings. It equates to tripled/quadrupled savings once living expenses are accounted for. Cutting costs will never match what an increased income brings. Small luxuries are good and necessary to prevent burnout, they are irrelevant compared to an increased income. Just avoid the lifestyle creep.