Your last moments will reflect your way of life. If you lived your life constantly sinning without returning to your Lord in repentance, how can you expect to miraculously have a good ending? All the best things are achieved by working hard.
Getting motivated is one of the hardest things to do if there is no inner-drive. Making healthy choices and staying fit has to be something you chose to do not for anyone else but yourself. Whether you're competitive or not, changing yourself starts by looking in the mirror.