Characteristics of quarter-life crisis may include:
+ feeling “not good enough” because one can’t find a job that is at one’s academic/intellectual level
+ frustration with relationships, the working world, and finding a suitable job or career
+ confusion of identity
+ insecurity regarding the near future
+ insecurity concerning long-term plans, life goals
+ insecurity regarding present accomplishments
+ re-evaluation of close interpersonal relationships
+ disappointment with one’s job
+ nostalgia for university, college, high school or elementary school life
+ tendency to hold stronger opinions
+ boredom with social interactions
+ loss of closeness to high school and college friends
+ financially-rooted stress (overwhelming college loans, unanticipatedly high cost of living, etc.)
+ loneliness
+ desire to have children
+ a sense that everyone is, somehow, doing better than you

These emotions and insecurities are not uncommon at this age, nor at any age in adult life. In the context of the quarter-life crisis, however, they occur shortly after a young person – usually an educated professional, in this context – enters the “real world”. After entering adult life and coming to terms with its responsibilities, some individuals find themselves experiencing career stagnation or extreme insecurity. The individual often realizes the real world is tougher, more competitive and less forgiving than they imagined. Furthermore, the qualifications they have spent so much time and money earning are not likely to prepare them for this disillusionment.

A related problem is simply that many college graduates do not achieve a desirable standard of living after graduation. They often end up living in low-income apartments with roommates instead of having an income high enough to support themselves. High underemployment for college graduates contributed to this problem; spiraling house prices are exacerbating it. Substandard living conditions, combined with menial or repetitive work at their jobs create a great amount of frustration, anxiety and anger. Nobody wants to admit to feeling like a ‘loser’; this secrecy may intensify the problem.

As the emotional ups-and-downs of adolescence and college life subside, many affected by quarter-life crisis experience a “graying” of emotion.

Source: Where everyone goes for assignments.