One of the messages I have gotten from the web site and forums, is to actively think about where the money is going, and optimize it so that you have a good life now and lots of savings for emergencies and retirement. And then get on with life.
This means thinking about the big expense choices (housing, transportation, food, children/pets/hobbies) and small expenses (eating out, cell phone/internet/TV) and making appropriate choices. Once you have got those set, most of the rest is automatic - if you have things optimized so that they are routine, you have your savings rate (hopefully >50% of net income) and your life style, and you are free to concentrate on having a good life as you go, not waiting for the be-all and end-all of retirement.
And seriously, retirement is still life (I am retired, so I have some experience here) and if you (general "you" here, no-one specific) did nothing but work and do the financial prep for retirement while you were working, you are not prepared for retirement - those are the people who suddenly find there is a huge void in their lives (the huge chunk of their lives that went to work to get all that money). So do the things now that you think you would like to do in retirement - maybe they are fine in small amounts but not in large, and you need to rearrange your plans. And what if life is a drag because of all the FIRE prep, and you get run over (fatally) by a bus? Not good.
Just my $0.05 worth (no pennies any more).