How do I chill out?

My husband has expressed to me recently since we’ve been having a lot of problems that I’m bossy, annoying and overbearing. I have never intended to be any of those things to him but I can see how I may come across that way at times. I have pretty bad anxiety, which isn’t an excuse to treat him bad in any way, but I feel like that plays into my emotions and how I express them to him. I have never been to therapy or taken anything to help with my anxiety not that I’m against either but I’d prefer to figure out how to manage myself without them. It’s clear to me that I need to just take a chill pill a lot of the time but I find it hard sometimes. I don’t want such minuscule things to bother me like they have been and I just wanna be able to relax and not feel like I’m pushing him away or going to lose him everyday. If anyone has any tips or advice that might help me work on myself and my insecurities please let me know. Thanks :)