I have recently resolved 2 cases in which my clients were a young 19 year old man and a 22 year old man. I was proud of both clients as negotiations progressed as they were not focused on the anger that results from being the victim of an accident but on all the right issues: the strength of their case, the defenses that were being raised, the money amounts of their harms and losses, the arguments that the defense always make that they both shared responsibility for their accidents, and the need to reimburse their health insurer for the medical care. Regardless of age, these are not easy issues for anyone to keep focused.
You have to play your hand smartly and they young men did so. See http://www.junelawyer.com/