Is 19 at the age of old dogs can't learn new tricks stage?
I heard some say that our brain stop developing at a certain age(12?) So it would be alot harder now if i didn't start learning at a really young age.
I always wanted to play piano really. . . but I guess I was a bit to lazy and wasn't really motivated enough. Now I sort of regret it back then.
While it's harder to learn piano at a later age, it's not impossible. I'm 19 and I started taking piano in college for credit. The only previous experience I had for reading notes came from a computer program called "Music Ace" that I had to complete in two years at my high school. I learned to read notes exceptionally well in high school and because of that, piano came a little easier at first. Now I'm learning things about diminished and augmented chord qualities and it's a little harder now.
If you can keep at it and practice at least 20 minutes every day, you can learn piano. You might not be as proficient at someone that's been playing since childhood, but you'll still become a very decent player at the end of your lessons.
Best of luck!