I've been having anxiety/ panic attacks lately. It worsens when I'm on a crowded train (I commute to work) and I find myself almost in the verge of tears. I try to overcome it by listening to music but sometimes the panic just refuses to go away. I find myself getting off the train at random stations to catch my breath and find it even harder to get back on the next one. I've never had this kind of an issue before and even now struggling to work out what triggered this on.. Any help / advice would be greatly appreciated.