Here the main causes of depression and anxiety from Johann Hari's book (+ nr 8 and nr 9 from me)
Work has no meaning, no purpose
No meaningful human connections
Focus on material things and external rewards
Unresolved trauma
Loss of social standing (loss of job, loss of status etc)
Insufficient connection to nature (humans true "home")
Loss of hope
Loss of freedom
Feeling unsafe during a longer period of time
Genes and biology
Glandular fever and/or underactive Thyroid
I can improve your situation for most of the above. Please note it will require more than just 1 session, so the below is just to get started.