I've semi retired twice. Couple things I'd consider.

Hobbies aren't hobbies once they're work.

Depending on what your income level was, it can be hard for the rest of the family to adjust (read wife) and that adds some stress.

For me, had too many opportunities to go back to what I did for big dollars and couldn't say no. I managed to keep pushing my income higher walking away and coming back to my career. So, I wouldn't change how I approached it. But, I think retiring early is tough in many ways people don't realize out of the gate...