We usually wait most of our lives for a grand finale of some sort...what would be the happiest day of our lives; what it would feel like, what it would take. The happiest days of our lives, it seems, usually come by when we're not looking, and shockingly, more than once. Like just a random, ordinary day when you didn't happen to get sad even once, didn't lose your temper at any family member or inanimate object even once, and didn't panic/hyperventilate/felt inadequate or alone even once. And just happened to laugh a lot with someone you love for the most mundane reasons in the world.
So right was John Lennon: Life is what happens to you when you're busy making other plans.