This is sooooo true!!! Why get depressed over things that you don't have or hate someone because they are doing something "better" than you. Why take away from there happiness. Shouldn't we be happy for them??!
You have to decide what your highest priorities are and have the courage - pleasantly, smilingly, nonapologetically - to say 'no' to other things. And the way to do that is by having a bigger 'yes' burning inside. - Stephen Covey