Retired at age 63 1/2 and that was seven years ago. Not sure I could call it planning but I had been thinking about retiring for about 40 years before that!
That's because I retired at 50 (61 now) then after a couple of years I opened an automotive performance shop and did that for 5 yrs (prior careers were elec engineer, s/w developer & home builder). Not sure what the next one is, right now I just trade stocks when I feel like it.
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'17 Chev 3500HD CC SB SRW DMax, '14 Jayco 361REQS
640w thru MPPT into 448ah AGM feeding 2kw PSW