starting a book

I never know how to start a story. I overthink it too much as I try to become as good as my favorite authors. But I forget that they were definitely not as good as they are now when they started, they had horrible books that weren't published or were and were ridiculed. Some had a bad start as people read what they wrote as a teen when what was socially acceptable then isn't now. I need to take it slow and just let the words spill out of my head like I do when I write on here. On here I never have a problem writing. I simply just write what I want and what I feel because I know no one reads these except me. Hell, I got the idea to start this because a book character I liked did it. I like the idea that someone one day might just happen to stumble across this page and get a look into an over-dramatic teenage stranger's life. Maybe it will make their life better to comparison to mine or maybe it's worse. But I like the unknowing aspect of it all.