First, I am so jealous of you girls who are young enough to be able to pass, or be much closer to passing than us older gals. I'm 55 and have been dysphoric since age 5 or so.. the urge.. no.. NEED, to unlock your insides WILL get stronger as you get older. Keeping it in will only get harder, cause more pain and ultimately cause you to lash out at those who care.
now, last 6mos on herbal programs have helped my mind quite a bit, and changed my face and body enough to help quell the insanity running rampant inside. And I am just a couple months from switching to script-based HRT. I have only been able to wear girl-cut jeans at home, and out, but it helps a bit. When I am at work (I travel for a living daily), dressing in the hotel rooms (but remaining inside still) also provides relief. And as funny as it seems, Burt's Bees Shimmering Lip Balm makes me smile too, helps me look a bit like the girl I feel inside. Some really cool colors too.
But still, every single time I look in the mirror, the single thing that keeps me from passing, even in a dark room... Electrolysis/laser is the one thing that every one of us will do as removing the greatest barrier.
It gets a lot harder keeping this in as you get older, but dressing the part, the honest-how-you-feel-in-your-heart-part, even if nothing more than clear nail polish, some nice girl-cut jeans from Goodwill ($5), color sneakers from WalMart (light blue piping Haley sneaks, $15) can absolutely do wonders for your mind, and still look low-key enough to not raise any eyebrows.
Will these help the urge to transition, smoothly, or not, take the edge off early? idk, I just know they have helped me.
I truly hope you find your path soon!