There are various and very individual reasons for feeling blue, experiencing stress, emotional struggles, and anxiousness. Some are more "world-oriented", meaning that living in this day and age is just downright too fast, too stressful and very nerve-wracking, which can lead to these feelings. Other reasons can be more personal and individual in nature. As someone who has benefited greatly from therapy, this is what I of course would recommend first and foremost, but there are also herbal allies that can effectively help support you and your nervous system.