Yeah, I relate to many of the stories here. I am 10 Months away from FI (and quitting my job), I am 49. I am trying to "fight" the boredom of these last Months by travel and luckily I need to travel a lot for work, it feels like time goes faster on the road (although I am tired of flying -- and yes, I also feel like that I am hoping that not something happens in these last 10 Months while flying ....). On top of this, I started a language course for the FI-country we are going to be based, and next to this, programming and astronomy. But, if I am honest, I rather speed up these 10 Months, and start renovating my new home (in East Europe).
In contrast to many above, I do not have a luxurious Social Security budget awaiting me (when 67, it is only about 1000 Euro a Month), so my own investments need to work long. Sometimes I feel nervous about that (I diversified by having rental home investments (50% of income), managed funds (50%) and extra cash buffer to overcome 4 years in case major stock crash). However, the feeling to be free is stronger, and we have some extra land with the new home, so we always can start making our own food, hehe lol