I wouldn't call life fragile, I'd call it a vapor. It is gone before you know it and there is not much warning if any at all. We got here, and we'll leave here. What happens in between?
With that being said, I know people who lay around a LOT. They are giving NOTHING back to society, they are just living. They are not doing anything, not going anywhere, not making a difference in others' lives, they don't participate in anything of any kind. I am not that way and even less so now at 45 than I was at 40. Of the many things I've learned over the past decade, one of the more important ones is that YOU are important, no matter who you are or what you do, did, your capacity, you are here if you're reading this, get up and do something. Remember what you just did 5 minutes ago? You can never (ever) get that 5 minutes back. Make it worthwhile. Time is all we have. Nobody knows when our last punch is.
One of my old coworkers left the job of 18 years recently. I left last year after 29 years. I spoke with them (my old coworkers) somewhat often even after I left, and I told him directly the same thing. Your life is based on time, and you don't know when your time is up so use it wisely. As an employee you are selling your life (your time) to your employer, and if you ain't happy and your employer doesn't respect that, go find another employer who will. Or start your own gig. I think it sunk in with my old coworker as I heard he had some issues with "the boss"--which doesn't surprise me. Boss had a personality that not many understood. A boss. Not a leader. We had a leader before the company was taken over by a group of investors who hired a boss to run the place. Now they can't keep employees, certainly can't recognize the importance of GOOD employees that are assets to the business. In a relationship, if those around you are pulling you down, go away from them. I would say life is too short, but for most of us it's not. It's just too short to get done what we really need to.
My friend is an aviator and mentioned to me in avaiation you have lift, you have drag, you have weight, and thrust. I was thinking about that. Same for our relationships with others. You have those that lift others up. You have those that drag others down. You have those folks that are nothing but weight. And then you have those who thrust you forward. Which one are you?