Hi,
I bought my first guitar at 34, took lessons for 3 months or so, and haven't looked back. Self-taught since then. I am now almost 39 and enjoy every minute of playing. Dont get me wrong, it was tough, but anything worth while is not easy. As others have said practice every day. I even take one of my guitars on vacation with me. I now own 4 and wouldn't give it up for anything. I am not a pro and actually far from it, but I play with others at every opportunity and have a blast. You can do it with perserverance but that would still apply if you were 16.
Welcome to music world my friend.
Chuck