Sales
Everyone work in sales. Everyone does sales daily. Learn to become skilled in sales and reap the benefits.
Pricing and Revenue Optimization might be intersting as well.
Links
- The most recommended sales books of all time on r/sales.
 - Sales as an Introvert
 - Gap Selling
 - Patric McKenzie on pricing
 
Thoughts
- Active listening is also a sales skill.
 - Passion is important here.
 - When thinking about sales, consider that almost all of the top management within almost all companies have experience within sales.
 - Consulting is closely related to sales, you are in fact, selling your self. (This is also why consultants are called “Whores in pin-stripe suits).