To be a successful sales professional, you need both the relevant attributes and the pertinent skills.
What’s the difference?
Attributes are those talents with which you’re born. You have them or you don’t. They’re what you are capable of, so you may not realize all of your attributes at a certain point in your life; but if you have the potential for something, then you have the attribute for that thing. Maybe you have a commanding voice, or a winning smile, or a natural talent for putting people at ease. These are attributes.
Skills you can learn even if you don’t have them, and even if you have them, you can and will lose them without practice. You may have a natural disposition (attribute) to become energetic before a crowd, but unless you practice the ins and outs of public speaking, you won’t improve or develop the skill.