Books that are profoundly philosophical?

I know that's quite the ask as it's all perspective- but i'm looking for a book that really hits hard, can make you appreciate life more, get you thinking. And is just overall beautiful even if it doesn't have an especially happy ending. I've heard suggestions for tuesday with morrie? Or when breath becomes air… I've also been considering Anthony Bourdains book.

I want a book that will make me think once I put it down, make life slow down almost, help someone find meaning. Not just through some feel good book.

Please let me know!