Be gentle to all and stern with yourself.
What you do today can improve all your tomorrows.
By failing to prepare, you are preparing to fail.
Problems are not stop signs, they are guidelines.
Begin to be now what you will be hereafter.
Be kind whenever possible. It is always possible.
Go for it now. The future is promised to no one.
To know oneself, one should assert oneself.
The most effective way to do it, is to do it.
If you think you can do it, you can.
I'd think learning to play the guitar would be very confusing for sighted people.