Yes you can settle with the opposing party without a lawyer; however, using an attorney during settlement negotiations can end up saving you $$$ in the long run. This becomes especially true if the other side is using an attorney on its end. The thing about attorneys is that they must vigorously defend their clients. This includes trying to get the best deal possible for them, which becomes much easier if the other side doesn’t have a trained legal professional to challenge them. Simply put, your settlement has a better chance of ending with better terms w/ the use of an attorney rather than doing it solo; consider having an attorney as an investment towards a better settlement.