Remember, if you cannot sing right now, this doesn't mean you'll never be able to. This only means you need to learn how to do it, just like any other musical instrument.
There was a time when I used to struggle daily with my voice, like maybe you're doing right now.
I was animated by a deep passion, and I felt I could do much more, but I just couldn't overcome my issues. I felt like my real voice was there, just hidden somewhere.
Does this ring a bell?
Now, it's not by chance that I finally got free from those limits which were preventing me from enjoying the pleasure of singing.
In fact, I experienced on my skin several methods and now I know what effectively works and what does not.
Once I started down this path, I've become more and more eager to learn, so I attended several voice pedagogy classes, where I learnt characteristics, peculiarities and issues of each and every voice type, new methods of teaching and much more. Actually I've never stopped studying and keeping me updated.