My mother was a worrier too. My dad was not. As a child, I was a worried a lot, but when I got out on my own, I quit most of my worrying. Dd #1 tends to be a worrier. Dh was not a big worrier when I met him, but more recently he seems to worry more and more.
Something I've noticed about worriers, based on how I used to be, is that they've let their worrying become a habit. It starts with a legitimate worry, or two, but when the reason for worrying is over with, instead of letting go, the worry is transferred to something else, creating a habit.
When I was going through a serious situation, I had a friend that knew what was going on, and kept me informed of what was going on. It kept me constantly upset. A lady that knew me, and knew my situation was serious, but knew the friend was keeping me upset, had a talk with me. She let me know that information had to be categorized into one of three categories. 1. Important, and/or useful for now. Use the information. 2. Potentially important, and/or useful for later. Remember the information. 3. Not useful, nothing I can do about it. Let it go. It took practice, but over time, I could let go of the worthless information that only served the purpose of keeping me upset. Again, it took practice.
I used a similar technique about worrying, with an exception. The exception was that I scheduled worry time. It's ridiculous to let worry eat up too much time. I allowed myself 1 hour of worry time in the afternoon. Never schedule worry time before bedtime. During that hour, I would categorize my worries. 1. Can I do something about it now? If so, what? Do it. 2. Can I do something about it later? If so, what? Start getting things in place, and get the ball rolling. 3. Is it something I've dealt with, and need to let it go? Is it something I have no control over, and/or can't do anything about it? Let it go. Sometimes you can't just let it go. At that point, acknowledge you need to get rid of that concern, and either pray over it, then release it, OR if you don't pray, release it to the universe.
Over time, and with practice, these things eventually become automatic. Something else I've noticed. People that are worried, tend to play the What-if game more, and usually stack the deck of what-if's on the negative side, without balance, which is just another bottomless rabbit hole. I don't know if the brain releases a chemical when a person worries, that becomes addictive, or if there is already a chemical that is there which causes it, or what. I don't really care. What I care about is dealing with things as they arise, doing the best I can about the things I can, and letting go of them once dealt with, or letting go of the things I had no control over to begin with.