I like this attitude:

Freely interpreted from 'the AGXIIK'

• Learn to do something other people value.
• Learn to do something other people do not like to do.
• Learn to do something that other people disdain or look down on.
• Do your work excellently.
• Be a walking ad for your excellent services.
• Always show up.
• Show up on time.
• Don’t drink (too much) or do drugs.
• Don’t talk politics or religion. Always be selling.
• Be an expert in your field.
• Don’t try to do things you are not good at.
• Early and LATE bird gets the worm.
• Never slack off and never give up even when you feel like you’ve been beat like a rented mule. Next week will be a better week. Next month will be even better.
• Take vacations and time off because vacations are recreation. It’s time to re-create yourself.

'Always be closing' on the best deal: yourself.