Sometimes things are more complex than simply saying those who choose happiness will ultimately be happy. I can't think of anyone who would claim to have chosen misery. People just don't do that. So although these motivational quotes are lovely and do have their place, can we just lay off them a bit?
If your goal is to achieve your dreams, to become a better version of yourself, or to simply just be happy, I encourage you to let go of shame, regret, resentment, anxiety, and anger. Leave those unhealthy emotions behind in 2014. By doing this, you'll truly start 2015 with a clean slate ready for prosperity.