"It's not how much you earn, it's how much you spend." is the wisest phrase anyone ever said to me in regard to living comfortably. I've tried to live by that and with a couple exceptions been successful. I still have more debt than I would like, but it's stuff like mortgages and not big screen TVs and cell phones. Likewise, I would like to take more risks with investments, but it's like a deep RPG to really get into it and stay on top of it.
Anyone hear of Dave Ramsey? I think he's bigger in more Christian/Conservative circles - as those are the people that talk about him the most - but he's a practical financial wizard. His view is based entirely upon really basic, simple principles that we all take for granted day in and day out. This is coming across as a plug, but it's not. I haven't bought any of his books or taken any of his free courses, but a lot of my friends and family quote him often. I've heard interviews and he seems really decent and down to earth dude. It's obvious that he's helped a lot of people avoid the common financial pitfalls. To me, most of his stuff is just common sense that just isn't that common.
Anyway, we try to keep enough in savings as an emergency fund, to cover ~6 months of unemployment/injury (in addition to short and long term disability insurance that we have). We treat it as verboten and never touch it, except to slowly add to it over time. Then we have something we refer to as a "super secret savings account", which is just another savings account that we pretend doesn't exist and dump money into bi-weekly. Then at the end of the year, we use it to offset tax withholdings by putting all or most of it into an IRA of some kind. Unfortunately due to some recent BS tax code changes, you can actually get penalized for keeping too much of your own money throughout the year (WTF). We also purposely divert ~10% of each of our paychecks into a mix of deferred comp accounts, Roth IRAs, traditional IRAs, and other pension-related accounts. So before we can spend it, we've already squirreled it away. That's really the key - at least for us. Our final take-home never looks like very much, but it is theoretically all spending cash.