Generally speaking in the first half of life our task towards individuation is “doing” ie school, carrier, establish family…. While the second half the task changes to “being”

Or if we think in terms of Maslow’s Hierarchy of needs: In the first half of life we focus on Physiological, Safety, Social, and Esteem needs and in the second half we look towards Self-actualization and Self-transcendence.

The Midlife Crises occurs when we sense a conflict between our doing and being needs. If one is not conscious of this natural transition, anxiety may arise and you end up buy the red convertible thinking that the purchase of more things is the answer – it’s a midlife crisis when you’re not awake to the change in needs and or try to fix “being” by more more “doing”.  If one approaches the transition accepting the anxiety its not long a crisis but a Midlife transition. (How we label things matters)

I noticed from your lists of concerns that most are based on a concern about imagined future – essentially your feeling the pain to day for an imagined fear of the future.  To move forward you may want to work on the list and identify any cognitive distortions and dissonance’s. In this you well be able to identify the real issues behind your anxiety create a plan to deal with them.