I lost my father almost four years ago. He died suddenly, most likely from a heart attack, after successfully fighting bladder cancer for over a year. During his fight with cancer, I was his main care taker. I spent almost everyday with him. And during that time I feel like I became a sort of friend to him...I learned about his hobbies, regrets and what he wanted out of life. We grew close. But as he began to grow stronger, I slowly began to pull away and return to my own life. And now all I feel is the loss and guilt that I abandoned him during the last few weeks of his life.