I've been smoking cigarettes since 3 years now( not continuously) and marijuana since 6 months ( not continuously) but the last month and a half i just got pretty much addicted to pot and did around 5 joints a day.. i completely stopped smoking as i developed serious health anxiety and started withdrawal symtopms.. started getting depressed and keeping quiet in house when i visited..( i live away from my home i.e. hostel). Pertaining to this m worried about my mental health and want to know if the weak mental stability is common in withdrawal? How long does it last( in my case)? Ps- Im facing serious anxiety issues and lack of vocabulary, insomnia and difficulty in concentrating. Help!!