When first building systems many years ago, suffered much angst in the many failures. Certainly there were successes as well. This success/failure cycle repeated a number of times, rather manic depressive in my reaction. OCD was certainly in play here as well. Then came a point, several years ago when this psychic merry-go-round was greatly alleviated. It happened organically, of it's own accord once system didn't require much psychic energy to imagine live performers in room.
While I continue to experiment with system, success and failures continue, base line sound quality of my system allows consistent pleasure. The failures much less important to me now, I can find happiness in the process these days.
For me, suffering was necessary in the pursuit of pleasure, happiness. I presume all audiophiles suffer to some extent, depends on how much a perfectionist one is.
And I'm not sure happiness as an emotion can exist in world devoid of suffering, discontent.