I've come to think that life is divided up into different parts, sections.
Their influence on your life varies greatly in different stages of life.
They need different skills to handle.
And if there's a disbalance, if one part has a bigger or smaller relevance than it should have in the phase of life you're in, it will make you unhappy.
Those sections are family, school & university, friends, work life, romance & sexuality, health, finance. There's probably more.
There's a time in life when work life doesn't play a big role. You might have a summer job, but it's not "the real thing" yet and you'll have a hard time to imagine how it feels. When you're very young romance and sex are not important - and for those on who it's pushed anyway it will be a burden for their whole life.
As for the skills... I haven't thought about that one too much yet. You need self discipline in the health part, I guess. Logic would be a help in dealing with the financial aspects. I think there's many virtues that will help you in more than one. Empathy, patience, impartiality for example.
My current life lacks the parts friends and romance & sexuality almost completely. I am not sure how it came about, it seems like it just happened. I guess my depression had to do with it, it had an effect on many aspects of my life and I guess never regained those two.
I might lack the skills that are needed in dealing with all this - I certainly seem to lack the skills to built up those kind of relationships. I would like to learn and grow.
There is a disbalance in my life. This is not how it should be. And I suffer.