Hi,your self precautionary measurements look preety fine. Self administration of Valium can be a hinderance towards your health as it is a prescription drug and is only administered after a thorough physical check up because of high rate of dependace.So before further use of Valium,medical check up is adviced. you can also seek help of proffesional de-addictors. Try to use natural modes of relaxation and control like Meditation and breathing exercises.yoga in the form of Pranayam can also be effective.