Simply listing your achievements on your CV isn't good enough, because recruiters want to see powerful evidence behind your claims. You can't just say you're 'the best salesperson on the team' – you have to be able to prove it with cold, hard facts and figures. Recruiters need concrete evidence, otherwise why should they believe you?
Quantifying your achievements really will strengthen your position when you're applying for a job. Write down a list of your skills and successes then ask yourself some questions. How do you match up to your peers, statistically? What are your 'firsts', those record-breaking achievements nobody else has under their belt? How many people did you manage? How many deals did you seal?
Whatever your line of work or position in the company, there are things you can promote which can be quantified. Think about KPIs you've exceeded, the money or time you've saved your company, the percentage increase in sales or productivity, the times you've led a group or shown initiative with a new project.
Even things you might think of as 'unquantifiable' can be justified. Listing yourself as 'organised' could be backed up with the fact you've never missed a deadline. Being competent in 'time management' might mean explaining how you've juggled tasks to meet a sudden change in priorities.
Recruiters can see straight through bold claims which aren't backed up by examples, and not quantifying your achievements will see your CV end up on the recycling pile. If you want to succeed, give them the evidence they need to see to back up your case.
Recruiters want evidence
You need to provide statistics, figures and examples
You can still quantify the 'unquantifiable'
Recruiters can see through bold, unsubstantiated claims