My study of Stoicism has led me to a life of contentment. Where ever I am in life, I seek to accept it and be content. I no longer chase "the next thing" as I find those that do are never happy. However, just because I do not chase becoming a better person does not mean I do not do my best at what I set out to do. It just means that the results no longer move my emotional level much.
In this way, contentment is my happiness.