If you ask your clients the right questions, you will get the right answers. When giving a testimonial your client has the very best intention such as when I work with my coach they helped me grow as a person, get more confident in my business.
You can see these are very generalist terms that do not exactly describe what you actually help your clients achieve, when you get more specific on asking questions to uncover the work you have done together your testimonials will speak for themselves. More importantly though, they will do the selling for you.
Let Your Client Testimonials Do The Selling For You