The BP oil spill has faded from the global headlines, but seven years later, the effects on residents of the Gulf Coast and the legal system nationwide are far from over. While the journey has been long and difficult, there are lessons for those injured and their lawyers.

The Deepwater Horizon Claim Center will likely shut down this year after paying an estimated $13 billion in individual and business claims for economic and property damages. As it does, payments from related settlements, this time with Halliburton Energy Services Inc., Trans-Ocean Offshore Deepwater Drilling Inc. and other defendants, will start. Thousands of claimants are expected to divide $1.24 billion.

The unacceptably slow pace of resolving claims from the worst environmental disaster in history has provided lessons on how to serve clients when the legal process strains everyone. The most demanding part hasn't been the law or the settlement itself. The rules and steps for filing claims were orderly, at least on paper. Instead, the more challenging part has been the delay caused by appeals and guiding clients through the lengthy process while trying to maintain their hope. Tens of thousands of people lost their jobs and businesses. Falling real estate prices associated with the recession and the spill took a second toll on their finances.