Another good message is you are not too old if you are 14 and can´t draw lol. I tried to draw when I was 16 and pospone it for almost 10 years because I always felt like I was no good. Nowadays I just don't care about those things.
Focusing is good, but also exploring different areas. People who are good at adapting to different environments and still keep learning have a lot of value.
We all now being good at drawing is not about talent but a lot of practice and hardwork,everybody have the same capabilities to learn something is just that some people started earlier or can get the gist of things faster. Some people may think Dali was a genius but he was also lucky because he got private art classes from renowed artists from an early age.