No, the bumpy plane and car ride was not harmful unless you were in the back of a truck laying on the floor with your head bouncing on a hard object/floor. This is the last time I will respond to these illogical concerns about getting brain damage from a plane ride or hug or such.

As Kiwi said, Lexapro and others like it take a couple weeks to take effect. One can never look at them with an hour to hour analysis. There is still a potential of a mild up and down in symptoms with SSRIs. They smooth out the highs and lows to a more tolerable level.

It sounds like the Lexapro is worth a second try. It can help you get control of your thoughts and anxieties, at least to a level where you start using the CBT skills.

Regarding the comment about pursuing psychology, I do not think it is a good idea for you. Get a book by Ralph Mattson and Arthur Miller called, "Finding a Job You Can Love." Finding a Job You Can Love by R. T. Mattson & A. F. Miller I met Ralph and Arthur 40 years ago. They have amazing insight into finding a career direction.