Isn't Diazepam an old medication?! I think there must be more recent medications that are better.
Any psychiatrist or doctor should be careful with old medication that are highly addictive. The doctors make me take Clonazepam for 12 years and now I know that I will take it for the rest of my life only because I'm totally addicted to it and not because I need it at all. Clonazepam doesn't even have any effect on me anymore, it's just that my brain is so much used to it that it needs its daily dose.
Once you're an addict to a pill, it's sometimes almost impossible to stop taking it.