Don't "do what you love"... "Love what you do". Aim at something rewarding in autonomy and mastery rather than holding out for a "cause" (if you want to maximize happiness). If you find a cause ("something important") anytime during this process, you can chase that too. But if you look at 100 people who really love what they do with their lives, I think it's surprising how few of those jobs fall into the "something important" bucket.
Don't "do what you love"... "Love what you do". Aim at something rewarding in autonomy and mastery rather than holding out for a "cause" (if you want to maximize happiness). If you find a cause ("something important") anytime during this process, you can chase that too. But if you look at 100 people who really love what they do with their lives, I think it's surprising how few of those jobs fall into the "something important" bucket.