The secret to a happy life, I think, is the balance between having a purpose greater than oneself, and finding joy in the small things we experience everyday, not in the big achievements.

This might seem paradoxical at first, but is not. The greater purpose is to prevent the existential dread of being lost, not knowing what to do and living a hedonistic lifestyle. The little victories are also necessary, because the big milestones (that we also need) will only grant temporary happiness, so you can't rely on that, it is better for someone to have constant joy in the little things that person chooses everyday.

In any case, good article.