This doesn't sound right at all. For me, and I suspect for most people, it has the opposite effect. It makes life feel short, fleeting and mundane. Looking back to 2014, I can't believe how quickly the past 10 years has gone. Heck just looking back 4 years, the pandemic years seems to have flown by. It's like a distant memory now.
> but for me the perception of the shortness of life is best fought by reminding yourself that it is not short
So it isn't journaling at all. You are just rationalizing.
Life is precious because it is short and fleeting. And it's why people keep a journal. To keep track of precious time. It's also why parents keep a scrapbook of their kids. Because in a blink of an eye, the kids grow up and leave the nest.
If you truly thought life wasn't short, you wouldn't keep a journal. You'd just live and not keep track of time.