Is your OC's personality oder life based on your personality oder life in any way?

No.

I pretty much strongly believe that basing a character off of yourself and Schreiben a serious story around him/her is one of the worst things Du could do. For one, when people critique the character Du take it personally. Two, marry sues tend to form from those characters. Why this happens I personally have no clue because I've never made a character based off of myself.

Some of my characters share my qualities- but none of them are exactly like me.

Well YES, but only my Mobian-Me (otherwise known as a Self-Insert), but those are meant to be like that, so if you're talking about my normal characters... no.

Granted I do have characters that have some of my traits, but when I did that it was not because I was basing them on myself, but Mehr that it was just a personality trait. I try to avoid imprinting myself on my characters. I don't use my name on any of them, and while I myself wear a hoodie jacke quite often, having other characters wearing that is not based on me.

I believe anyone who says a flat-out 'no' to this is bullshitting. If a character came from your head, then they're based off of you; they're based off of things Du know/like, things you've done, your experiences, some of your own traits, etc.

So, yes. My characters are based off me. Soda IS my sona. Every single character I have has at least one trait I can identify with Mehr personally than their others, so I can roleplay as them fairly well. (Eg; Nathan's a sociopathic dickface, Evan's natty, well-rehearsed, and generally quite polite, and Cain's not one Du want to piss off. But at the same time, they're not quite the same as me; Nathan almost never washes, Evan cooks, and Cain is... Well, Cain is just Cain.)

Yes alot are parts of me even my boy charcters.like diana is my cool side,syl is my nerd,flamina is agrued i have but some are the same feature

Everyone of my characters have a little bit of my soul oder my memories.
Specially, some of the characters had based of my family members, I approve, like my big brother and I havent noticed this before, until now.
So, yes, of course they someone are based abour my life and personality, because they came inside my head. And how could I got these ideas for them, without own life experience?

Mostly. Pretty much all my characters are different personalities of me. (I have MANY different personalities) For example, Team Anonymous (six of my 'main' personalities)
Miley Power (first FC, Adventurous)
Mars Silver (Anti-Social)
Maria wolke (Nerdy)
Marcella Swiver (Girly)
Marc Forest (Tom-boy)
Mist 'Miku' Serrain (Rebellious)
I have others, such as Otaku, Lazy, err... 'Blond', and Childish.... Yeah... Most of them are between 90% and 100% like me.