Some people manage to stay focused and you can see this dedication shine through when they play gigs, create Youtube videos or generally just play. We all have this ability to dedicate ourselves to something bigger and higher than ourselves whether it's music, business or just growing as an individual.
We will all struggle to stay motivated and we will all have less productive days for no reason other than we can't find the zone. That's normal...
Don't be afraid of 'Failing', afraid of trying again what didn't work yesterday. Reputation and dedication is the key to success, no matter what it is. The longer you practice or perform a task over and over again, the quicker and easier it will become.
Dedication, motivation and reputation are the things that matter most. Even if we fail several times over, we will get there in the end, if we don't give up.