From another post by the same person:

So like...I dunno if my imagination just sucks or whatever, but I'm having a really hard time picturing myself "as a guy" or in a male body, if you will.

Like I've tried to make comparisons to my dad and brother, but I look like a carbon copy of my mom so I'm at a loss. I look in the mirror and try really hard to picture myself with a cut jawline and facial hair, and I deepen my voice as much as I can to try and get a feel for what it'll sound like, and even with binding it's hard to ignore the very obvious extra weight in my chest area that shouldn't be there. So I just end up feeling defeated because no matter how much I exercise my imagination, I feel like I just can't get an accurate or even remotely close idea of my true male form. My current body is not a man's, but it's the only one I've known all my life so I hate that my whole life up to now I've had no idea what it's like to be in a man's body. Probably why I find it so hard to imagine what it's like to be in one because I just have no experience to compare it to.

Reading things like this, I think "Life is hard enough as it is without trying to be something you aren't."