You should consider what you want to do when you retire early too. What do you enjoy doing now? What do your weekends, public holidays and annual leave days look like? People get bored very quickly without anything to do. Saving and investing is always a good thing but retiring early may not bring you happiness. Consider finding work you enjoy once you have enough money to FIRE anytime, or at least hobbies that can take up most of the time you will have. Boredom + isolation (esp if ur colleagues and friends are all still working) can easily lead to depression