So I recently realized that I keep getting random waves of anxiety . May call it intuition sometimes. Other times is just like I'm chilling watching YouTube and my heart goes pounding and shortness of breath. I smoke cigarettes which are supposed to calm you but not really. 
And there are 3 repetitive scenarios,
1. It comes and goes like nothing happened.
2. I start overthinking and get sad for things that never happened .
3. I keep overthinking and get agressive / angry.

Currently undergoing quite a bunch of stress, school, money, relationship,... None of which help me calm down.

I experience r/dpdr on a daily basis but that's another story 
I have tried a bunch of grounding techniques but I lose it anyways. Meditation, suppliments, breathing, but nothing keeps me grounded anymore. And usually I get overwhelmingly anxious before sleep and for the past month I wasn't able to sleep properly. Tried catnip for sleeping but it just keeps me awake for longer. That 5 hours or less of sleep isn't helpful xD

Any ideas what else to try to calm myself? 
(Been struggling with anxiety since ever I could remember , but all I get from my parents is "it's all in your head"; yeah I know thank you haha) 

Anyways thanks in advance,
Peace and love