Problems are not stop signs, they are guidelines.
To know oneself, one should assert oneself.
Do not weep do not wax indignant. Understand.
If you're going through hell, keep going.
Who seeks shall find.
It's always too early to quit.
Never complain and never explain.
To be a good loser is to learn how to win.
Expect problems and eat them for breakfast.
Leap, and the net will appear.
I'd think learning to play the guitar would be very confusing for sighted people.