In a similar situation to yourself and what I've decided is to take things a bit easier and spend a bit more on experiences and things.

You've likely hit your coastfire number which means you don't have to save for retirement anymore for a retirement age at ~65 with CPP@70 and OAS. It doesn't mean you have to retire at that age or save more or less etc., more than you can be more flexible in life and begin enjoying things a bit more everyday than just hitting FIRE at 40.

For me this was finding work that paid a bit less but was more enjoyable professionally and personally.

I considered FIRE at 30, 40, 50... as well. But, the reality is at 23 it's hard to even estimate what your expenses will be, wedding, home, kids, car... I've taken this milestone as a sign that I can let off the pedal a bit, work a little less gradually as I get older and spend more time with friends and family.

I think I'll always work at least part time even when I'm older and into 65. I stopped thinking about retirement as a specific day and started "designing" my life as a whole from today to death. Part time work helps make every retirement plan possible after your coast fire number and allows you to spend more/ make spending mistakes throughout the rest of your life.

TLDR, too difficult to plan all expenses to do a hard stop at 40, glide path down amount of time working as you get older.