Some of you might not like this, but I'm only going to have one option. The question is what drives you? Although the emotion might not always be sustained, we all have a worldview of sorts that inspires us to be the best person we can be. Best, of course, is a relative term. What's best is subjective to each individual person. While some might believe there are objective measurements for life success, those metrics cannot be forced on us. Thus, or happiness is subjective based on our personal values in life. These values can be altruistic, but they might be self-absorbed too. Either way, we all have something that drives us, even if it doesn't seem like anything.
Added: I made this poll anonymous so can you could be honest.