I like what others have said--this is always a question, isn't it? Some folks have more talent than others, and not much can be done about that difference. In other cases, it's hard work. Some folks naturally have discipline that helps them keep practicing and working at something. This is a skill that can be learned.
Don't worry about these things too much--just do your best. Some folks' best is Jr. Varsity, for others it's Varsity, for others it's the Pro-Bowl! But as long as you are doing your best, you can be happy with your accomplishments no matter what.
Yeah, I'm old too.
I'm kinda like ennay--things were easy for me in school, but later on in real life things were harder because that's where discipline comes in.
Enjoy your time!