By doing all the things that you need to do, you can really feel better when you do them and you can appreciate your life more.  By living a  healthy lifestyle you can allow yourself to feel much better and have a happier life as well.  Try to do things that you enjoy doing and you this will aid you greatly in allowing you to have the best life you can because it can give you much pleasure when you do them.  Try to make the most out of your life each and every day and this can really aid you attitude.