I break it up into smaller goals. First, it was aiming for the first $100k in my taxable account after maxing out retirement accounts. Then it was working towards having FU money, which meant I had the freedom and flexibility to switch to a different, more comfortable, hamster wheel though I couldn't quite leave the rat race just yet. Now, it's aiming towards lean FIRE. Once I hit that goal, I'll work towards full FIRE.
In addition, I also look for ways to optimize expenses to reduce time to FIRE. I'm not talking about little expenses cuts here and there, though I do those as well sometimes. I'm talking about major rethinks about our entire lifestyle, like questioning whether we need a car in our HCOL area with a great transit system (no, we don't), or how big of an apartment we really need (3 people in a 600 square foot 2-bedroom is comfortable for us and ensures that we fully utilize the space), or whether DD really needs to go to a $50,000/year preschool. By revamping the way we thought about the "necessity" of these major money sucks big ticket items, we dramatically increased our savings rate and reduce time to FIRE by several years.
Finally, we also played with the idea of low-stress side hustles that capitalize on our existing skills. SO and I both have side hustles that generate enough to cover our fun money and groceries. We spend maybe 2-3 hours per week on this.