Maybe some empirical data can help you. I bet you'd love to believe that your penis was totally normal (it is). As long as you have 2 inches, you can please a woman because that's really all the inner wall of vagina is most sensitive to.
Here's a youtube video about Women's penis size preference.
Debunking women penis size preference chart HOAX - YouTube
Also, average penis size is 5 inches for a reason. That's just what has been evolutionary advantageous in some way. How much do you care about boob size? Probably not too much. As long as a girl has them, you're pretty happy. For me, B thru D cup is great. If that's how shallow I get and I'm a guy, then how shallow are women?
Probably not any greater. Anything from a 3-7 inch penis seems fine and workable. Manhood isn't defined by penis size.
I have an average-size penis (5.67" I think) but my first girlfriend still left me. I'm shorter than average (5' 4" I think) so I ruminated on my height and weight (115 lb). But, there was no connection between us. I loved her dearly but it didn't happen the other way around (plus lots of other factors). She left me for another guy and started dating him the same night she dumped me. Ouch, to say the least. My body wasn't the issue. It was our compatibility and her immaturity that really caused such a drastic breakup for me ("it's not you, it's me" type of BS). Just like height doesn't REALLY matter that much, penis size doesn't correlate or cause happiness and acceptance.
I promise you that your penis is just fine. Your ancestors brought forth you...so your genetic code is dandy. In an evolutionary sense, penis size itself has NOTHING to do with being a good provider, lover, and father. NOTHING.
Remember this: You can be a great father, lover, provider, man, and more by using your mind and heart well. Biology is one thing you can't control but your environment is something you can,
Do some research about penis size. Rely on scientific data from numerous sources. You'll quickly find that most women don't care as long as you have a penis. Most orgasmic potential comes from the clitoris anyway. Even if you strictly penetrate a woman from behind, you can engage her clitoris with your hands and make both of you feel supremely naughty.
Doing that is a major turn-on alone. Do you care about vaginal depth? Probably not. As long as you can fit in, you're not going to care.
So, if you don't judge women that way, then isn't there a high likelihood that a woman exists who doesn't judge you?
Depression sucks. I admit it. The world would be a messed up place if we ranked people on penis size. This world is yours to define. Do you always want to be focused on your less-than-average penis size? I bet not. Take a risk and assert pride in your identity.
It's all going to be okay. You are worthy regardless of your penis size.