You cannot climb the ladder of success dressed in the costume of failure.
Others can stop you temporarily - you are the only one who can do it permanently.
When you give directives to a child, especially a teenager, you must consider the nature of your child.
Each failure brings you one step closer to success.
Discipline yourself to do the things you need to do when you need to do them, and the day will come when you will be able to do the things you want to do when you want to do them!
The way you see life will largely determine what you get out of it.