Was just reading finnish newspaper. According to studies mindfulness can be as effective as antidepressants and pain killers.
Tho it requires persistence same way than exercising. According to the test quoted it requires 45 minutes 5 to 6 times a weeks to really benefit from it as it does not only just calm you down, but sort of reboots your system. I guess you could compare it to cognitive behavioral therapy where you learn out of harmful thinking. So you are teaching your body/brain new way deal with things.
I have tried it ,but only few times. Have to admit it takes a bit effort to concentrate on it.
I will give it a proper try and see what it could offer for me!