I’m not one to pontificate — and certainly not about maturity — but I feel very safe in making this statement very strongly —
A key component of emotional maturity is the ability to acknowledge, not flee from, and work through negative emotions.
I dare venture a step further and say that a large number of problems Westerners typically experience come from running from negative emotions. We’ve become so rich and developed such wonderful technologies and products that it’s almost always possible to find something to dissipate short-term negative emotions.
If your work is hard or confusing, there’s always a steady stream of entertainment around.
If you’re feeling low, there’s foods that are — quite literally — chemically engineered to ensure they have no fiber and an immensely pleasurable burst of sugars, salts, and fats to rapidly change that short term mood.