I would suggest giving it a try. I bought a book called 8 Minute Meditation, about a decade ago. As a title suggests it provided a framework for a short meditation practice, with different mediation technique to try over an 8 week practice. Off the back of that I started guided mindfulness session mainly using the UCLA mindfulness app. I did that regularly until two years ago. I still do it occasionally. I think it helps in managing negative self talk and just calming the mind. I've never struggled to sleep but on the occasional night I have a too many thoughts spinning around it helps calm the mind and get me nodding off.
I don't think mindfulness is a panacea, I don't think it makes you a better person, and I don't think it is a miracle cure for anxiety. However it does help, or at least it helped me, and it requires a very minimal investment in time and money.