If you’ve never been lucky enough to witness Jacaranda trees in bloom, this long article in LAist (which is NOT behind the LATimes paywall) will give you a history of the trees and how they came to California.
I will mention, just for the sake of home-town pride, that these trees are also all over the Bay Area, and the person who seemingly made them popular up and down the state was from Oakland.
One grandparent in SoCal used to have fancy cocktail parties in the patio under the shade of the blooming Jacarandas in spring, and I cannot think of anything finer.
I’ve read that everyone should have a mental image of something beautiful and soothing to focus on when times are bad, to calm the mind and so on. The Jacaranda in full glory is a very worthy candidate.