Great question. There’s a lot you can do to help your lawyer win your case!
First, be open and honest with your lawyer. Your lawyer needs to know everything in order to best help you.
Second, collect evidence. It’s great if you have evidence or records from your accident, but also keep track of how your injury is affecting your employment and anything else. Write everything down.
Third, seek on-going medical assistance if injury symptoms persist and tell your doctor about all your symptoms so there’s a record of what you’re going through.
Fourth, follow your doctor’s orders. It looks bad if the doctor told you to wear a brace and you decided not to. It looks like you may not have actually needed the brace to begin with, and that your injury isn’t as bad as you say it is. In reality you may have just been lazy.
Fifth, communicate carefully. The insurance company collects information in all sorts of ways. You might mention details of your accident to a few people at a party, one of whom works with the insurance company. Informal conversations can be easily twisted or misinterpreted. Perhaps the insurance company is spying on you and finds a picture of you on social media. They could claim that you’re lying about your injury (photos do not communicate pain). Keeping quiet about your personal injury is best.