It takes years and years of experience to be great at sales

Do you know salespeople who have one year of experience 20 times and somehow think that's 20 years of progressive experience? Being good at sales or anything else isn't about how long you do it. Doing well at anything takes practice, and if you're willing to practice, then you can be a top performer in as little as a year or two. Just think about the veteran who has one year of experience 20 times: In one year you can be where they are; in two years you can be twice as far.