Don't worry, you're not crazy. I understand the feeling. Sometimes it feels like the entire world has left me behind. There are days I feel the need to somehow catch up. On those days I have to remind myself there is no need to hurry, that where I am is acceptable.
That's much better than my old mantra "I am exactly where I am meant to be". Honestly it does not feel as though I am meant to be here. It feels like most of my life I have not been where I am meant to be emotionally, physically, and mentally. It feels as though my life were meant to be different, like I was deprived of the love, happiness and sweetness I was meant to know and cherish.
As for my family, I don't feel they've left me behind Instead, I feel I've left them in the dust. They are behind the entire world, more behind than me, and they choose to be that way. They had dragged me down with them. And now I am far past them. I've grown so much in the past few years. Maybe you are also growing out of a toxic family. Have you ever considered this?
If you are growing out of toxic people, I am very proud of you. I truly am. If not, don't worry. You'll get there, but no need to rush. Arrive at your own pace. Don't give up on yourself and I promise you'll arrive faster than you think.