“Don't let what you can't do get in the way of what you can do.”
“Do not let what you can't do interfere with what you can do.”
“I cannot do everything, but I can do something. And I won't let what I can't do get in the way of what I can.”
“Don't let anyone else define what you can or can't do. The choice is yours.”
“Don't let what you cannot do interfere with what you can do. ”
“Never let the things you can't do, stop you from doing what you can.”