How do I get my life in check?

OK, so... here's the thing. I have two big insecurities of mine, and they've been eating at me for a long time. And I wanna know what I can do to get rid of them.

The first has to do with my career choices. See, I was an artistic person growing up. I loved drawing, writing, and I had dreams of becoming a horror screenwriter. But after losing one of my ex-GF/BFF (It wasn't a direct cause, just happened about a year after), I lost my interest in screenwriting. I picked up the Yu-Gi-Oh! Trading Card Game around this time, and decided I wanted to become a professional YouTuber, whose content focused on Yu-Gi-Oh. Those people are called "Yugitubers."

But about 3 months earlier, I realized the biggest problems of the game, and started losing interest in it, and in being a Yugituber. I'm still not interested in screenwriting or writing, and I can't write as well as I used to. So I don't know what I want to do with myself, career wise. Those were my only two real dreams, and now they're gone.

My second insecurity is me and my love life. I want to be in a relationship, settle down, and have a family some day. The problem, however, comes from the fact that I'm short. I'm 5'6, and as we all know, most women like taller men. And I see why. A lot of women wanna feel small, feminine, and protected. Knowing this has honestly given me a shitty self-image; I don't find myself attractive.

Yes, I could try to work out and date someone shorter than me, but... the thing with me is, I like masculine traits in women more than feminine traits. So to me, a sporty tomboy or "action chick" is leagues hotter than a girly girl. And three masculine traits in women I find especially attractive are athletic/muscular bodies, dominance (In a relationship), and tallness. And if a woman is physically less capable than me than me (I'm not athletic), it's gonna be hard for me to perceive her as dominant over me. So what can I do about my lack of ambition, and my love life?
Updates
+1 y
And I should probably clarify. In terms of the love life thing, a woman being tall/taller than me isn't a requirement. But like a lot of other people, I associate height and muscularity with physical dominance. Really, the most important of the three masculine traits I listed is dominance/being the leader in a relationship.
Updates
+1 y
Finally, when I call a trait "masculine" or "feminine", it's because men/women are more likely to have that trait than the opposite gender. A lot of fit women are really feminine, a lot of empathetic men are really masculine. Really, I'm just describing traits by which gender is more likely to have them, mainly because of gender roles.
How do I get my life in check?
Post Opinion