I feel mentally way older than most people. I expect to live to old age though, but I sort of fear boredom. I remember being utterly amazed by the world in my early 20s, there was just so much to discover and learn. Now I'm in my early 30s and I'm very 'meh' about it all. I kind of fear what my mindset will be when I hit 40, 50, etc.I don't feel like I've got a full lifetime ahead of me.
Hope I'm wrong in that feeling/intuition... But I've actually had a dream a couple of years ago that complements that idea. A statistic, like a bar chart or something, appeared and indicated I was at roughly 70 percent of my life. Not sure how or what exactly, but the message was clear: I was over halfway in life. I did the maths in the morning and I think I estimated 70 percent meant that I'd life until 34.
Anyway, I'm not sure what inspires that feeling. Maybe just the inability to identify with the future, the unknown. But when I ponder it over, I just don't feel like I will live to grow old. I just can't imagine it. And to support this conjecture, I'm making up bullshit evidence like my growth/progression so far; how I'm going too fast in life for the 'ceiling' to be 100 or even 70.
My mind also feels like an incessant stream of thoughts, the projection of which for another 50+ years down the line just seems too much. Then there is the projection of other life situations which scare me if I think about them unchanged as I grow old.
So seize the day I guess...
Or get ran over ponder about this stuff while riding my bike (Nike: 'make it happen').
I read that this is the reason why old people get into boring things like gardening. It's because they've done most other things, so they're running out of stuff to discover.