In my 60s as I am, I think I have the advantage over those who are younger. Why? Well, because what I'm blessed with now, could have only resulted from the accumulation of many years-- and that blessing is the knowledge of how my emotions work and why I have those specific emotions. When I was young, I did not even know what would make me happy. But now I do. And I managed to finally attain the goal which would make me happy.
So I think that youngsters have it much harder than us oldsters because the young have hardly any experience yet, so they don't know how emotions work. This can only come from experience. Of course there are some who can learn it fast--but those are the ones who are popular, so the fact that they have many friends obviously enable them to succeed faster. Unfortunately, most of the members at this SF site of ours are misfits and outcasts. So they have a much harder time.
It might help us if we realize that life itself is a test. A test of our emotions. Your toughest enemy is yourself. Even if you have enemies that hurt you a lot, even then your worst enemy is still yourself. Because the emotions come from yourself. This is what I learned from Buddhism. Buddhism which also taught me techniques to rein in my emotions.
Emotion control even includes one's eating habits too. For example, tonight, all I had for supper was just Broccoli. And I did not even put any salt on it at all, no seasoning at all. But that is Buddhist discipline. Because too much spices is a sign of emotion. This is how I live my life now. No, not happy--because happiness is an emotion. Let's just say that I have peace of mind, serenity. Of course, I still have problems, and storms will come. My emotions can seep through at times, but overall, I like reality.