Thanks for your question on Healthcare Magic.
I can understand your concern.
Yes, obesity, poor sleep habits can stress and anxiety. And this stress and anxiety can cause all the symptoms.
But better to first rule out lung related causes like
bronchitis for your
chest discomfort and breathlessness.
So
consult pulmonologist and get done clinical examination of respiratory system and PFT (pulmonary function test).
If both these are normal then no need to worry for bronchitis.
Loose weight and stay healthy.
Avoid stress and tension, be relax and calm. Take 6-8 hours of night sleep regularly.
Consult psychiatrist and get done
counselling sessions. Try to identify stressor in your life and start working on it's solution. You may need anxiolytic drugs too.
Don't worry, you will be alright. But first rule out bronchitis.
Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.