What is momentary existential crisis of youth?

There are several.

Hormones, not understanding how nurturing and championing one's inner child is part of growing up and realization. Rx: "For Couples Only," Shaunti Feldhahn.

Economic: moving from dad and mom's home and support, to being self-supportive. Related: "Popular Economics," search term "real work matters rwm.own" for list of vocational training opportunities.

Educational: choosing a college and career path. Related: "Liberal Fascism," re unbalanced educational society.

Spiritual: becoming stronger in your faith, your parents'/family's faith, and perhaps more: "The Answer You're Looking for Is inside You," "The Great Divorce," "Light Is a Living Spirit."

Youth is the seeds on a dandelion. The softest breeze and you are middle aged.

I think it's when you question your values.