I am a fairly new step-parent to my partner's little girl (almost 2 years) I'm struggling due to my mental health condition, constant fatigue and abusive upbringing. I often feel like I can't carry on and that I'm undeserving of being a parent figure. I also, on the other hand feel unhappy that I'm not a biological parent and feel I have nothing of my own and I struggle daily to 'find my place' I then feel like I'm being overly-emotional and selfish and then guilt arrives soon afterwards. She's only 5. Why am I feeling this way? Why do I feel like I'm making this harder than it really is?

HELLO EVERYONE MY NAME IS STAR AND I BEEN DATING THIS GUY FOR 6 MONTH WE LIVE TOGETHER BUT WE WERE FRIENDS FOR YEARS  ON AND OFF.HE HAVE KIDS BUT 5 ARE ONLY HIS BIO. HE GOT TWO BM.HIS FIRST ONE NOT BAD NO DRAMA FROM  HER .SHE HAVE TWO GIRLS BY HIM.

Gosh where do I start. So I've been with my partner for 2.5 years now, living together for 1.5 years. I met his 4 nearly 5 year old daughter around 6 months into our relationship, so really early on. She doesn't live with us, generally stays for 1-2 days at the weekend every week and extra during school holidays. He has a son who he hasn't seen for the full duration of our relationship (he'd last seen him before we met so nothing to do with me).