You sound like I did! Worked for megacorp 33 years: engineer, dept mgr, plant mgr, global director. Goal-driven, blessed with great $ compensation and good health, surpassed my magic retirement savings #, set a goal to FIRE by age of 58. Wasn’t sure I’d be able to avoid the OMY syndrome... then megacorp restructuring had me downsized when I declined to relocate an 8th time. Suddenly jobless, FI, happily married with a 13 yr old daughter, with not much time to prep for what’s next... at the age of 55.
Fast forward 3-1/2 yrs. Love this life! Have been some “quiet days” but never a “boring day”. Exercising regularly, more time with our daughter, more time for hobbies, more travel, etc. Doing some part-time consulting, as much to help an old friend out as to bring in some addl fun money.
Sometimes it takes getting kicked out the door... it did for me. Best of luck on your FIRE journey.