We convince ourselves that life will be better after we get married, have a baby. Then we are frustrated that the kids aren't old enough and we'll be more content when they are. After that we're frustrated that we have teenagers to deal with. We will certainly be happy when they are out of that stage. We tell ourselves that our life will be complete when we are able to go on a nice vacation, when we retire.
The truth is, there's no better time to be happy than right now. Your life will always be filled with challenges. It's best to admit this to yourself and decide to be happy. There is no way to happiness. Happiness is the way. So, treasure every moment that you have.
Stop waiting until you finish school, until you go back to school, until you lose ten pounds, until you gain ten pounds, until you have kids, until your kids leave the house, until you start work, until you retire, until you get married, until you get divorced, until Friday night, until Sunday morning, until spring, until summer, until fall, until winter, until you die, until you are born again to decide that there is no better time than right now to be happy.