This is true. I practice it for a long time now, and still struggle a lot. How well it goes depends totally on the context of my life. It's hard, and honestly led to being very depressed a long time. But now I do feel like a better person, a lot of insecurities are gone, and with that, a lot of things that i did which were ultimately negative, also are gone (mostly). (lot of things still to work on :D).
I did go to therapy after a while for a few sessions, that's definitely something i'd recommend when depression hits. it's totally worth it, to get some confirmation or guidance on psychology.
One of the things for example for me that was an issue:
I became super indoorsy after a bad injury. That also caused me to excersize less. This both led to a loss of anti-cortisol production, which is a hormone that reduces stress. That ultimately meant, that no matter how long i'd sit in silence, i'd still be stressed because my physiology lost the ability to produce that by itself. Now i go for lots of walks outdoors, and do some minor excersize. It helps a lot to reduce stress again, but I do still need to meditate / sit in silence to reduce fear.
