[slothtrop]

Agreed, and would add that latching too much to some idea of a categorized identity can be a crutch. Half of life is showing up, as the saying goes: if you're lonely, you have to get out there. I moved to a new city and joined meetup clubs, played pick up sports, etc. You have to move outside your comfort zone sometimes, there's no way around it; no one's going to swoop into solve this problem for you.

Besides loneliness, sedentary lifestyle, poor diet and low vitamin D3 can lead to low serotonin levels and therefore moodiness and loss of ambition.