I spent time with that same meditation style a few years ago and it pulled me out of a mild low period. Can't recommend it enough when someone is dealing with a hard stretch.
Lots of folks here look to peptides for stress, anxiety relief and sleep support, and that's fine when it works. If you want more control over how outside events hit your internal state, mindful meditation is worth trying. It acts like a superpower but starts with just minutes a day. You end up calmer and stop letting triggers affect you as strongly. Over time you build a switch for stress responses that eventually runs on its own. Picture staying relaxed and positive while problems slide off without impact. That's been my daily experience for twenty-five years with no stress and solid sleep. A short nine-minute guided session exists that's kept purely scientific without spiritual overlays.