I absolutely see where you are coming from, it really is a fair argument. And of course there are plenty of worries you can’t simply turn off, however, some worries you can. If you’re up for it, read: Man’s search for meaning by Victor Frankl. It’s about a psychiatrist that was captured and brought into a concentration camp in WW2. There he used his time to observe the human will for meaning during the worse of times. One of the top psychology books ever written! Not my opinion. Its ranked #1 in that category.