The 'Fast and Furious' actor passed away in a car crash on November 30, 2013 and his brother Cody, 28, says the star's daughter Meadow Rain Walker, 17, is learning to cope without her dad.
He told PEOPLE: "She is doing better. Time does help, but for her it is different than it is for me. That was my brother, and we [were] really close and I love him dearly, but that was her dad, and she was young to have her dad taken from her."
"But she is doing better. And we're just protective of her and everyone around her is, and that is why no one hears too much [about her]. That is just the way Paul would have wanted it. Paul was so protective of all of us, he was a very private person."
Cody also admitted that he still finds it hard to believe that Paul is gone and sometimes wishes he could just call him to chat.
He said: "Paul was just the most real guy ever. The best big brother, the best son, and the best father. The best everything.
"This year was particularly tough. Things will pop up, things will happen, and I just want to call him so bad. We had so much in common, we had so many of the same interests, it was unreal. I just want to get on the phone and call him. But I can't.
"Paul is with me all of the time. I really do feel that, I particularly feel that every time I go to the ocean, I surf, or I spearfish. I don't dwell on November 30th. I celebrate Paul's life, and if it's not with family it's with friends."