Bios are intended to be snapshots, 4-5 paragraphs at most. They should give the reader a good idea of who you are as a person or businessperson, with your career highlights and accomplishments included, but concisely. There is no room, nor should there be, to list everything you've ever done.
Resumes are no different. I recommend that work history go back only 10 years, 15 at the most. And keep your bulleted lists brief as well, 4-5 per job, not the 10, 20, even 30 I often see.
The fine art of shutting up is as important in your written communication as it is in your verbal communication, as Fred so aptly explains, below.
THE FINE ART OF SHUTTING UP
By Fred Joyal, goaskfred.com
One of the key lessons that every salesperson learns is when to stop talking. The reason I bring this up in a dental blog is because, in case you hadn’t noticed, successful dentistry involves effective communication in order to facilitate treatment acceptance. (Put another way, selling.) Human nature is what it is, and human behavior is often quite predictable. If you’re trying to convince someone to do something that will benefit them, but they don’t understand the value, then they need to be sold on the idea. Click here to read Fred's entire article.