Never give up
This is the best advice in this tread,
we learn from failure, you need to fail to succeed.
In the other hand is the attitude, and cannot be confused with failure, some people who fail decide to give it up all and never try again, their choose what is easy and don't need an effort, most of them end up living with mammy and pap, alcoholic, divorce or with no wife or kids, unemployed or with a shit job, smoking and eating crap food.
You are the only one that can make this decision, we are all born with opportunities to choose from.
Who are you?
The guy who stand up and keep fighting after failing?
or
The guy who go live with mammy and pap and became an alcoholic with no wife because is too tired to succeed?