I recently had an opportunity to think long and hard about an observation that some people seem to be just naturally happy while others seem to be (just as naturally) unhappy.
The "Happies" find life relatively effortless, and other than minor speed bumps and hurdles everyone has occasionally, seem to capably move on and move smoothly. The "Unhappies" seem to go along ok for awhile, then inexplicably, any joy they may have found in a given activity seems to collapse and drain away all by itself, quite suddenly and for no apparent reason, leaving them floundering, frustrated, exhausted, unmotivated and burnt-out. Everyone can catch glimpses of what it's like to be the other, and can even inhabit each other's shoes, learn from each other's responses, but I think there is likely a default experiential bottom to selfhood which is either mostly one or the other, at a genetic level. And after a lot of life has passed by, one is required to suck up one's relation to life and come out of the closet as authentic, warts and all, even if one is (gulp) an Unhappy.
I am quite aware that I was born an "Unhappy." Luckily, I recognized it early on and was able to construct a life that could accommodate this quirk, spot it in others, ignore it most of the time, and keep going in spite of it.
If life could be compared to modes of transportation, the Happies would be like captains of their own sailboats. Their trip through life has ups and downs but is mostly broad and flat and smooth, few obstacles, good leverage, small energies needed, good control over response to one's environment, lots of opportunity to stargaze, a three-sixty view, a telescope through which to assess potential beaches/shorelines/rocks and either avoid danger, or maybe deliberately court it, testing their own control. Stiff headwind? Adjust sails and tack. Whitecaps? Adjust sails and lean. Keep sailing, keep moving. One must watch for obvious dangers but there is no inner inertia to be overcome. The Happies are the ones that mainstream culture becomes modeled after, which can make the Unhappies or Less-Happies feel even less congruent, inside, and delay their authentication/integration process.
A transportation metaphor for an Unhappy, I think, would be an engineer on a train that has to climb a mountain over a lifetime. Not only does the engineer have to move that train against gravity, he or she has only so much track to work with. The big stall periods are when the engineer (the nonconscious) has to stop the train, go back and rip up all the track that has been traveled, go ahead and lay it all down again in front of the train, get back on the train, drive it forward as far as it can/will go until the cycle must be repeated.
With any luck, and with sufficient insight, an Unhappy can learn to live with this luck of the draw, can learn to not be in any hurry, to stick as much as possible to the least steep grades, not be disoriented by switchbacks, to even, some day, be able to lay track and keep moving all at the same time, even attach sails to the train and learn to work them to advantage. Eventually the long stalls decrease in length. The Unhappies can treasure the small but genuine hope that if and when they ever get to the top, the view will probably be astounding, and they'll maybe even be able to share it with the Happies, and their life will have counted for something, been worth the sturm und drang und struggle after all. Plus they can remember that a sailboat will never make it up a mountain, nor carry as much cargo.