Talentless, hopeless

Nothing I am able to do is talent. I have learned everything I know.
I play the vihuela and I play it well but I can't keep a tiempo for the life of me.
I play the keyboard, something that I learned while learning to read music.
It didn't just come to me, I had to learn it.
I cannot tune an instrument by ear nor can I play any song by ear.
I can play if I watch for chords, notes, and strumming patterns; if I study the player.
I can sing, but who can't?
In mariachi, everyone sang--even if you didn't.
My singing is rough and raw, hardly a talent.
All the Spanish I know is what I've learned from four years of schooling--I'm Mexican and Puerto Rican.
I cannot hum whilst whistling, that takes talent.
Something that I lack.
What I have are skills, the skills to get the job done.
And if I have a talent, I assume it's writing.
But my skills are like me, mediocre at best.
I can't even play Guitar Hero past meduim.
I'm creative, but that's more of a personality trait than a talent or skill.
But I'm told that I make people happy--is that a talent or a skill?
I'm easily liked because I know how to be myself--is that a talent or a skill?
But what talent do I possess?
I cannot think of a damn thing...