Odds of Hanging On
How strong is your grip? On good sales techniques. Don't be so literal. You cannot grasp abstract concepts...literally. Wait, we're just confusing ourselves now.
If you can motivate people and know just when to give a pep talk or a virtual kick in the backside, you can hang on as long as you want.
Sure, you can learn techniques. You can also learn to manage people. But, the best sales people are born. If you've got the gift, you can go far in any place you choose.