Anxiety Support Group
Anxiety is a physical condition marked by intense and persistent feelings of distress, fear, angst or dread. General anxiety caused by routine day-to-day stresses usually passes quickly and is experienced by almost everyone at one time or another. However, such feelings that linger over time and are very difficult to cope with, and which lack a clear cause, may indicate...

Set a routine for sleep. Set a routine for calm, peace, and relaxation at sleep time.
Keep a journal to help you. You are not alone.
I've never used antihistamines for psych symptoms, but they hit me hard enough that I won't operate machinery on them. It kinda makes sense that I could use them as a sleep aid. Kinda. . . Chewing. . .