Regrets

I lost touch with a friend years later I saw a picture of him lying side ways on his bed dead. He died from brain cancer. I wasn't there for him. I couldn't attend his funeral because I was on vacation. Now I have so many regrets. And I'm only 15. He didn't even get to see his brother graduate highschool I got to see his brother and my brother graduate. Somehow I could've done something to prevent all this regret...