Ok I think I understand this after some quick reading.

1. Psychostimulants, antidepressants, and mood-stabilizers are all classes of anxiolytic drugs used to treat depression and anxiety.
2. Diazepam, aka Valium, is an older anxiolytic
3. OP is implying that they are done with taking meds mentioned above, but when offered Valium, a benzodiazepine class anxiolytic known for helping people sleep, OP is all for it.