If you can read and follow directions, if you want to be successful, then you can. It might not be today or tomorrow, but it will come. The other thing is to never give up, no matter what. Disappointments will come, but you have to keep going. If you can do these things, then you can be successful.
Bottom line is anyone can be successful, you just have to want it bad enough to go after and don't let anything stand in your way.