You should hire a Texas personal injury lawyer as soon after the accident as possible. An experienced attorney can make sure that the necessary evidence is collected and preserved (witness statements, pictures...). Also, you will need to focus on getting better--not dealing with the investigation and the insurance company adjuster. Plus, the sooner you let the attorney deal with the insurance company, the better your claim will be positioned for a future settlement. We see mistakes made by people who try to represent themselves, and sometimes these mistakes make it very difficult to obtain a favorable settlement.