Okay, it sounds like you need to break a few habits there.
You already know that smoking won't help much. It fact, it will ruin your skin, and make it harder to pass.
Let's talk about watching girls and becoming depressed.
Instead of worrying that you are not yet there, take the opportunity to observe and learn from girls/women your age. It can be rather helpful in developing feminine traits. And eventually making a seamless transition.
Life may have dealt you lemons - so make lemonade.