How many of us when we look back don't wish we had made a different choice now and again? Perhaps 12 years ago you got called by Google to join a great Internet start up but you turned it down for a cushy mortgage bank gig. Maybe you've always wanted to pursue a music career but felt that a stable life as an accountant would be more realistic in paying your bills. Maybe you've always wanted to go to culinary school but you decided to stay at your company hoping for that promotion that never happened. Whatever the decision, we have to live with them.
The truth of the matter is where you are today in life is the result of a series of decisions or indecision, which ever the case may be, that we've made. Either way you either purposely chose to be where you are one step at a time or ended up where you are due to lack of decision.
If you are dissatisfied with your career like 70% or so of the population, according to many statistics, then perhaps today is the day to do something about it. But then again that leads to another question. How satisfied are you "supposed" to be at your job? Since when did we decided, as a society, that we are owed job satisfaction? That somehow we are "entitled" to be happy with our jobs? Then who defined what happiness with our jobs meant?
All things to consider. Two generations ago, there was no such concept. Today, that's the primary concept. People are more dissatisfied today, probably because they feel that work should be as fun as going to Disneyland with someone paying their bills.